The hum started in Valen's back teeth and spread.
Not sound — vibration. The kind that bypassed ears entirely and went straight into bone, into the calcium and marrow and the dense tissue that connected jaw to skull. The descent passage angled at thirty degrees and the vault energy increased with every step like pressure increasing with depth in water, except water pushed from outside and this pushed from inside, the energy infiltrating through skin and muscle and settling into the body's architecture with the patient insistence of something that had been saturating this stone for five hundred years and was not going to stop for six people with the audacity to walk through it.
The Grimoire burned.
Not metaphorically. The leather cover against Valen's hip had passed warm, passed hot, and entered a temperature range that was producing a red mark on the skin beneath his shirt. He shifted the book to the other hip. The heat followed. The First Chapter was reacting to the Foundation's energy the way a tuning fork reacts to its resonant frequency — vibrating, amplifying, the artifact recognizing its native environment and responding with an enthusiasm that had nothing to do with Valen's comfort and everything to do with five centuries of separation from the place where it had been written.
"Neve." Valen's voice was tight. The vibration in his teeth made speaking feel wrong, like talking through a mouthful of static. "How much further to the bottom?"
"Two hundred yards." Neve was five steps ahead, the blue grimoire blazing in her hands. Not the controlled glow of navigation — a flare. The Third Chapter responding to the Foundation the same way the First was, the Architect's book coming home to the construction level it had been designed to manage. Neve's face in the blue light was sharp, focused, the compressed smallness of her expression replaced by something that looked almost like hunger. "The passage levels out at a junction. From there, the Foundation proper."
Behind Valen, Thessaly made a sound. Small. Involuntary. The kind of sound a person makes when their primary sensory input goes haywire — a gasp, a truncated syllable, the vocal expression of a system receiving more data than it could process.
"Thessaly?"
"I'm getting everything." Her voice was strained. The clinical register intact but brittle, the precision of her diction maintained through effort rather than habit. "Every sigil in every wall. Every energy pattern in every stone. The information density at this depth is — my perception can't filter. I'm reading the entire Foundation simultaneously and I can't stop."
"Close the grimoire."
"The perception isn't the grimoire. It's the bond. The permanent modification. I can't close it any more than you can close your eyes permanently. I can—" She stopped walking. Pressed her palms against her temples. The silver grimoire at her chest pulsed and Thessaly's jaw locked and for three seconds she stood on the slope with her eyes squeezed shut and her hands on her head and her body rigid with the specific tension of a nervous system being overloaded by input it couldn't refuse.
Then she opened her eyes. Breathed. Adjusted.
"I'll manage," she said. The words came through teeth. "The signal-to-noise ratio is terrible but I can isolate relevant data if I concentrate. It requires active effort. Constant."
"Can you walk and concentrate?"
"I'll find out."
They descended. Two hundred yards of slope that felt like two miles, the vault energy thickening around them like humidity in a greenhouse, the shielding array's seven emitter cores humming their dampening frequency into the charged air. Sera walked in the center of the formation — the safest position, the spot where the shielding overlap was densest. Her face was flushed. Sweat at her hairline. Pupils wide despite the grimoire light.
"You good?" Ren asked. He'd positioned himself between Sera and the downhill gradient, his body angled to catch her if the slope and the energy and the four hours of tunnel transit combined to take her legs out. His burned arm was functional — Coranthis's mending had closed the blisters, smoothed the angry tissue to pink — but he held the crossbow in his right hand, favoring the undamaged side.
"I'm standing next to a bonfire I can't see," Sera said. "My skin is hot. My eyes hurt. My left hand is tingling and I can't tell if that's the nerve damage healing or the vault energy making it worse." She kept walking. "So. Good enough."
---
The Foundation opened around them like a cathedral.
The passage leveled out and the walls — the rough, narrow walls of the maintenance tunnel descent — simply ended. Fell away. The space beyond was so large that the grimoire light couldn't find the far side. Valen stood at the threshold and the four-color glow — blue, amber-brown, silver, red — spilled outward into a chamber that swallowed it the way a lake swallows a thrown stone, the light dispersing into distance and dark.
Then the sigils activated.
Not all at once. A cascade. The nearest sigils first — carved into the walls at shoulder height, Mortheus's script rendered in lines as thick as Valen's thumb, each character a foot tall. They lit from within, a deep amber-gold that was nothing like the grimoire light or the corridor's white emergency illumination. This was the Foundation's own light. The dead god's illumination, embedded in the stone, powered by the same vault energy that saturated every molecule of air in this space. The cascade spread outward from their position — sigil after sigil igniting, the light rolling across the walls like dawn rolling across a landscape, and the chamber revealed itself.
Columns. Dozens of them. Stone pillars thirty feet in diameter rising from the floor to a ceiling that the expanding light reached and showed to be vaulted, arched, carved with more sigils that pulsed in rhythm with the walls. The floor was smooth stone — not the rough-cut maintenance layer, not the functional corridors, but polished. Deliberate. The work of an architect who cared about beauty as much as function, who had built this space not just to serve a purpose but to declare something about the nature of that purpose.
The columns were carved. Every surface. Floor to ceiling, the stone covered in Mortheus's script — not the functional signage of the maintenance tunnels or the directional markers of the corridors but text. Pages. The columns were pages. The Foundation chamber was a library written in stone, the dead god's knowledge carved into pillars that held up the ceiling of the deepest level of his creation.
"Gods," Ren said. The word came out quiet. The combat mage, the practical soldier, the man who thought in concrete terms and measured the world in threat levels and ammunition counts, stood in Mortheus's Foundation and said the only word that fit.
Neve walked forward. Into the chamber. Her blue grimoire blazing so bright that it cast shadows behind the columns — long shadows that stretched across the polished floor and flickered as the sigils pulsed. She wasn't reading the grimoire's pages anymore. She was reading the room. The Third Architect's bond feeding her information about the space they'd entered — structural data, engineering specifications, the construction history of a chamber that had been the heart of the vault network's creation.
"This is the Primary Assembly Hall," Neve said. Her voice had changed. The compression was gone — not the full voice she'd used on Thessaly, not the sharp voice of the waystation clearing. Something new. Authority. The confidence of a person standing in a place they understood, surrounded by structures that their knowledge encompassed, the Third Architect's centuries of expertise flowing through a fifteen-year-old who had found, for the first time in her life, a domain where she was the most capable person in the room. "The Third Architect designed it. This is where the grimoires were assembled. Where Mortheus wrote the first words."
She pointed at the nearest column. The sigils carved into its surface were different from the wall sigils — denser, more complex, the characters smaller and packed together in blocks that looked like paragraphs.
"These are construction logs. The record of how the vault network was built. The Third Architect kept notes. Everything — materials, techniques, problems encountered, solutions applied. Five hundred years of engineering documented in stone."
"Can you read them?" Valen asked.
"The Third Chapter translates. Not perfectly — the Architect's notation system is compressed. Technical shorthand. But the bond gives me enough to navigate." She turned in a slow circle, her eyes moving across the columns, the walls, the ceiling. "The Convergence is south-southwest from here. The Primary Assembly Hall connects to a series of secondary chambers that follow the Foundation's main axis. We follow the axis south."
"Distance?"
"Thirty-two miles from this chamber. The Foundation passages are wider than the maintenance tunnels — we can move faster. But there are obstacles. I can see structural warnings in the construction logs. Sections marked for reinforcement that were never completed. Flood-prone areas where the water table intersects the Foundation level."
"And guardians?" Ren had his crossbow up. Not aimed — scanning. The combat mage's instinct in a new environment: identify the threats before the threats identify you. His eyes moved across the columns, the passages leading away from the hall, the dark spaces between the pillars where the sigil light didn't fully reach.
"Foundation-level guardians are different from corridor guardians," Neve said. "Larger. More autonomous. They were designed for independent operation — the Foundation was the last level to receive network updates, so the guardians here had to function without central coordination for extended periods."
"Independent meaning they make their own decisions."
"Independent meaning they follow their last received instructions until new instructions arrive. Their last received instructions were given five hundred years ago."
---
They found the first guardian forty minutes into the Foundation traverse.
Valen's channels felt it before anyone saw it — a disturbance in the vault energy's ambient pattern, a knot of concentrated force moving through the charged air the way a current moves through still water. The Grimoire's pages rustled. Not in response to a spell or a navigation signal. In recognition. The book identifying something it knew, something that had been built by the same hands that had written its pages.
"Contact," Ren said. He'd felt it too — not the vault energy, which his channelless body couldn't read, but the change in the air. The static charge shifting. The fine hairs on his arms rising in a new direction, aligning with a field that hadn't been there a moment ago.
It came around a column. Not around — through. The stone parted for it the way water parts for a moving body, the pillar's surface rippling as the guardian passed through the carved sigils and emerged into the passage. Not the humanoid shape of the corridor guardians. This was something else.
Big. Eight feet at the shoulder. A quadruped form built from the same living stone that characterized all of Mortheus's infrastructure, but where the corridor guardians had been approximations — rough shapes, functional rather than detailed — this was precise. Articulated. Stone limbs that moved with the fluid grace of a predator, each joint a marvel of engineering that allowed stone to bend like muscle. A head that was not a head but a sensor cluster — multiple faceted surfaces that caught the sigil light and reflected it in patterns that shifted as the guardian's attention moved from person to person.
And it was glowing. The sigils on its body — carved into the stone skin the way they were carved into the walls — were lit. Active. Not the dormant amber of the hall's passive illumination but the bright, concentrated gold of a system on alert.
"It sees us," Thessaly said. Her voice was tight with the effort of processing the Foundation's information overload while simultaneously reading the guardian's energy signature. "It's scanning. Comparing our profiles against its authorized access list."
"Which hasn't been updated in five hundred years."
"Which hasn't been updated in five hundred years."
The guardian stopped. Ten feet from the group. Its sensor cluster focused — the faceted surfaces aligning, concentrating on Valen. On the Grimoire at his hip. The recognition was visible in the shift of the guardian's body language, the stone form orienting toward the First Chapter with the directness of a system that had identified a known object in an unexpected context.
Then it spoke.
Not speech. Vibration. The same bone-conducted communication that the corridor guardians had used, but deeper, more complex, a multi-frequency transmission that carried information Valen's body received and his mind struggled to parse. The dead god's language, rendered in subsonic frequencies, the words pressing into his skeletal structure like fingers pressing into clay.
"It's requesting authentication," Neve said. The blue grimoire was translating — the Third Chapter decoding the guardian's transmission into data that Neve could read. "Standard Foundation access protocol. It wants bearer identification, authorization level, and purpose of visit."
"Give it to them."
"I'm trying. The protocol requires a specific response format. The Third Architect's data includes the format but the guardian's version is older — pre-deployment. It's expecting a response from the original construction crew, not from bonded bearers who accessed the network five centuries after it was sealed."
The guardian moved. One step forward. The articulated limbs placed with the deliberate precision of a mechanism that could cross the remaining ten feet in less than a second if it decided that the unauthorized intruders in its domain required physical removal. The sensor cluster's gold glow intensified.
Ren raised his crossbow. The bent-tipped bolt on the rail, aimed at the sensor cluster. "Neve. Faster."
"The response format has to be exact. If I send the wrong authentication, it doesn't default to 'try again' — it defaults to 'hostile incursion.' The Foundation guardians were the last line of defense. They don't give second chances."
Another step. Eight feet now. The guardian's body was generating a field — Valen's channels could feel it, a concentrated pulse of vault energy building in the stone limbs the way energy builds in a weapon before discharge. The quadruped form was gathering force. Preparing.
Neve's fingers flew across the blue grimoire's pages. Not reading — composing. The Third Chapter's interface allowing her to construct a response in the dead god's language, assembling the authentication signal from components that the Architect's data provided. The girl's face was locked in concentration. No compression. No minimization. The full cognitive power of a bearer whose bond was three days old and whose grimoire was the construction manual for the very system she was trying to communicate with.
"The four-way authentication," Neve said. "The guardian's protocol predates it, but the authentication carries a higher authorization level than anything in the guardian's access list. If I embed the four-way signal in the response format—"
"Do it."
"It's not designed for that. The formats are incompatible. I have to bridge—"
Six feet. The guardian's sensor cluster was now close enough that Valen could see the individual facets — dozens of them, each a different crystalline surface, each processing a different spectrum of information. The gold glow was hot. Not warm, not ambient — hot. The specific heat of a system that had moved from scanning to targeting.
Neve spoke a word.
Not the dead god's language. Something else. Something that came from the blue grimoire's pages but that Neve shaped with her own voice, the Third Architect's technical notation translated through a fifteen-year-old's vocal cords into a sound that was both authentication signal and command override. The word carried the four-way authentication's harmonic — the resonance of four sibling grimoires broadcasting in unison — embedded in a response format that the guardian's five-hundred-year-old protocols could parse.
The guardian stopped. The gold glow flickered. The targeting field that had been building in its limbs dissipated — not instantly, not smoothly, but in stages, the system processing the response, comparing it against protocols it had never been designed to receive, finding the four-way signal's authority level and discovering that it exceeded every clearance in its database.
The sensor cluster dimmed from gold to amber. The guardian's body language shifted — the predatory stance relaxing, the articulated limbs settling into a neutral configuration, the stone form transitioning from *threat response* to *standby*.
The vibration came again. Different frequency. Softer. The guardian accepting the authentication, acknowledging the four-way signal's authority, updating its internal protocols with the classification data that Neve had embedded in the override.
"It's accepted us," Neve said. Her voice was steady but her hands were shaking. The blue grimoire trembled in her grip. "Classification updated. We're authorized. It's switching to escort mode."
"Escort mode?"
The guardian turned. The quadruped form pivoted on its articulated limbs with a fluidity that stone shouldn't possess, orienting south. Toward the Convergence. It waited. The amber glow of its sigils pulsed once. Twice. The rhythmic patience of a mechanism that had been given a task and was waiting for its charges to follow.
"It wants to take us to where we're going," Neve said. "It's a maintenance unit. Taking authorized personnel to their destination is its primary function."
Ren lowered the crossbow. Looked at the guardian. Looked at Neve. The combat mage's assessment: the girl had just talked down an eight-foot stone predator using a language she'd been learning for three days, and his crossbow bolt wouldn't have done a damn thing anyway.
"Lead on, then," Ren said. "Yeah?"
---
Marsh's headache hit critical at the two-hour mark.
He'd been quiet about it. Farmer's discipline — the same stoic endurance that had kept him working through Coranthis's neural demands in the maintenance tunnels, the refusal to acknowledge discomfort that came from a lifetime of working through worse. But the Foundation's amplified vault energy was doing something to the red grimoire's bond that went beyond what the maintenance layer had demanded.
Coranthis blazed.
Not the controlled amber glow of passive healing. A flare. The red grimoire's field expanded without Marsh's conscious direction, the healing energy billowing outward in a wave that washed over the group with a warmth that was almost aggressive. Ren's burned arm — already smoothed to pink, already functional — tingled as the amplified field accelerated the remaining tissue repair. The scar that would have formed over the next week formed in seconds, the skin knitting with a speed that was visible, the healing pushed into overdrive by the Foundation's energy surplus.
Marsh staggered. His hand went to his head. Coranthis was drawing on the Foundation's ambient vault energy the way a sail draws on wind — passively, automatically, the red grimoire designed to absorb and channel healing force and finding, in the Foundation, more force available than its bearer's neural architecture could handle.
"Marsh." Sera was there. Her hand on his arm, her damaged fingers gripping his sleeve. The farm wife reading her partner's distress with the fluency of decades.
"The book." Marsh's deep voice was strained. Compressed in a way that was different from Neve's compression — not emotional containment but physical. The voice of a man whose skull was being squeezed from the inside by a grimoire that was gorging on ambient energy. "It's pulling. Taking in more than I can—"
Coranthis flared again. The amber field surged, and Marsh's knees buckled.
Valen caught him. One arm under Marsh's shoulder, the farmer's weight — solid, heavy, the body of a man who'd spent forty years lifting things — sagging against Valen's side. The Grimoire at Valen's hip pressed against Marsh's torso and both books pulsed, the First and Second Chapters in sudden, accidental proximity, the harmonic between them generating a feedback that made Valen's teeth ache.
"Neve." Valen's voice was clipped. Stress-mode. Short sentences. "The shielding. Can you modify it to dampen the energy reaching Coranthis?"
Neve was already moving. The blue grimoire open, the Third Architect's knowledge applied to a new problem — not protecting Sera from vault energy but throttling Coranthis's intake, preventing the red grimoire from drowning its bearer in amplified healing power.
"The emitter array." Neve adjusted two of the seven cores — the ones nearest to Marsh's position in the formation. "If I shift the dampening frequency to target the specific wavelength that Coranthis absorbs — here—"
She turned one of the iridescent lattice rods. A quarter-rotation. The shielding field's character changed — the silver-blue hum acquiring a reddish tint at the edges, the modified frequency now dampening not just ambient vault energy but the specific resonance that the Second Chapter used to draw power.
Marsh straightened. The pressure in his skull eased by a degree. Coranthis's field contracted — still active, still healing, but no longer gorging. The red grimoire throttled back to a level that Marsh's bond could handle, the modified shielding acting as a regulator between the Foundation's energy surplus and the book's appetite.
"Better." Marsh's voice was rough. He stood under his own power. Didn't thank Neve — the farmer's acknowledgment was in his nod, the single dip of the head that carried more weight than words from a man who used words sparingly. "The book wants to heal everything. Everyone. The whole damn tunnel. I can't make it stop wanting."
"You don't have to," Neve said. "The shielding will cap the intake. But if you leave the formation — if you step outside the emitter array's radius — the cap comes off."
"Then I don't leave the formation."
The guardian waited. Patient. The amber sigils pulsing their slow rhythm. The maintenance unit had no opinion about the biological limitations of its authorized personnel. Its function was to escort. The pace was irrelevant.
---
They made camp at the eight-mile mark, in a secondary chamber that the guardian led them to.
Not camp in any real sense. No tents, no fire, no supplies beyond what they carried. But the chamber was defensible — a single entrance, thirty feet of clearance, the vault sigils providing light that was steady rather than pulsing, the ambient energy marginally lower than the main passages due to some architectural feature that Neve identified as an energy sink designed to create habitable zones within the Foundation.
The guardian positioned itself at the entrance. Sentinel mode. The quadruped form settling into a stillness that was more than stationary — locked, the stone body becoming indistinguishable from the chamber's walls, the only movement the slow pulse of its amber sigils marking it as alive in the way that Mortheus's infrastructure was alive.
Thessaly sat against a column and pressed her palms over her eyes. The gesture — blocking visual input to reduce the load on a perception system that was drowning in data — was the first overtly human response Valen had seen from the archivist. Not clinical. Not analytical. The raw, frustrated action of a person whose primary sense was malfunctioning and who was using the oldest, simplest coping mechanism available: covering her face.
"The Magisterium force," Valen said. "Can you still track them?"
Thessaly's hands came down. Her amber eyes were bloodshot — the capillaries stressed by sustained perceptual overload, the physical cost of processing information at a volume that the Fourth Chapter's bond modification had not been designed to handle indefinitely. "Fragments. Through the noise. They've entered the primary corridor network's southern section. My best estimate puts them ten to twelve hours from the Convergence via the corridor route."
"And us?"
"Thirty-two miles at the pace we've maintained — approximately twelve to fourteen hours of transit. Allowing for obstacles, rest, the guardian's escort speed." She paused. Calculated. "We arrive at approximately the same time. Possibly later."
The math was a dead heat. And dead heats, in Valen's experience, were not heats you won. The Magisterium force had numbers, equipment, and the corridor network's better infrastructure. Valen's group had four grimoires, one stone guardian, and the knowledge that the Foundation route existed.
"Rest," Ren said. The word was a command. The combat mage who had been checking on everyone — adjusting Sera's position in the shielding formation, monitoring Marsh's headache, counting the guardian's sigil pulses to establish a baseline for normal versus alert — now deploying the most basic tactical tool in his inventory. "Four hours. Shifts. I'll take first watch."
"With what?" Thessaly asked. The question was genuine, not sarcastic — the archivist cataloguing the group's defensive resources. "Two crossbow bolts and a stone guardian you can't command?"
"With two crossbow bolts and my eyeballs. Same as always."
Thessaly's mouth did something. Not a smile. The territory adjacent to a smile, the place where professional respect and personal amusement shared a border. She nodded once and closed her eyes. The Fourth Chapter's perception didn't sleep — she'd be processing Foundation data even unconscious — but her body needed the rest and her conscious mind needed the break.
Marsh and Sera settled together. Coranthis's amber field, dampened by the modified shielding, provided a warm glow that served as their blanket. Sera's head on Marsh's shoulder. His arm around her. The farm couple, underground, in a dead god's construction hall, doing what farm couples did at the end of hard days: holding each other and not talking about how bad it was.
Neve sat cross-legged with the blue grimoire in her lap, reading the construction logs carved into the nearest column. Not resting. Learning. The Third Architect's data flowing through her bond, the dead god's engineering knowledge expanding her understanding with every page she read and every sigil she decoded. The girl who had been compressed was becoming something that compression couldn't contain.
Ren settled at the chamber entrance, beside the guardian. Man and stone sentinel, watching the passage, one with crossbow and one with five hundred years of obedience.
---
Valen sat alone.
Not far from the others. Twenty feet. The distance between social proximity and solitude — close enough to be reached, far enough to be apart. The Grimoire at his hip was still hot. The Foundation's energy fed it the way the Foundation fed Coranthis, the First Chapter absorbing the ambient force and converting it to something that pulsed against Valen's body with the rhythmic insistence of a heart that wasn't his.
He opened the book.
Not to cast. Not to navigate. The gesture of a person who opens a familiar object — a journal, a locket, a letter read too many times — seeking the comfort of the known. The Grimoire's pages appeared. The First Chapter's contents, displayed in the dead god's language that Valen could read through the bond: the seven spells he'd accessed, the navigation functions, the diagnostic tools. Familiar territory. The book's first forty pages, mapped and memorized over weeks of use.
The pages turned.
Not by Valen's hand. By themselves. The Grimoire's autonomous page-turning — the behavior that preceded autonomous casting, the book asserting its own agency within the bond. The pages moved past the First Chapter's contents, past the empty spaces between sections, past the dividers that separated the book's organizational structure into segments.
And stopped.
Page forty-one. The beginning of a new section. Text that Valen had never seen before, in script that was denser and more complex than the First Chapter's spells. The dead god's language, but evolved — more nuanced, more layered, the writing of a mind that had moved beyond the First Chapter's straightforward destructive principles into something more sophisticated.
Chapter Two.
The Grimoire was showing him its second chapter. Not because he'd asked. Not because a corruption threshold had been crossed or a new spell had been unlocked through casting. Because the Foundation's energy was feeding the book and the book was using that energy to grow, to expand, to reveal contents that had been sealed behind barriers that the surface world's ambient magic couldn't penetrate.
Valen read the first line.
*The architecture of severance. To cut is to understand what connects.*
Sever. The Third spell listed in the outline of the Grimoire's capabilities that the seven embedded minds had described. The spell that cut connections — physical, magical, emotional. The spell that cost a friendship memory. The spell that, according to the failure cadence, he would eventually use wrong and sever something he didn't intend to cut.
The second line.
*To unmake what is woven requires knowledge of the weaving. The caster must see the thread before cutting it.*
And the third.
*The cost is connection. To sever connection, one must pay with connection. The exchange is symmetric. The universe insists on balance.*
The spell was there. Complete. The incantation, the technique, the principles of application. A new tool in a toolkit that currently held six used spells and a growing catalogue of losses. Sever: the ability to cut any connection. Magical. Physical. The bonds between atoms, the links between souls, the ties that held things together.
The Grimoire pulsed. Warm. Inviting. The book had been patient — had been patient since the bonding, since the first spell, through every casting and every cost. Patient the way a dealer is patient with a customer who's buying.
And the thing — the terrible, honest thing that Valen sat with in the amber-gold light of the Foundation's sigils while his companions slept and Ren watched and the guardian stood sentinel — was how easy it would be.
Not just to learn the spell. To want it. The desire was already there, pre-installed, a function of the bond that connected his nervous system to the book's ancient machinery. The Grimoire didn't need to persuade him. It had spent three weeks building the infrastructure of need — the six spells, the six losses, the specific pattern of power and cost that trained the brain to associate casting with capability and cost with something that happened after, separately, in a different cognitive register from the rush of the spell itself.
He could learn Sever right now. Could absorb the incantation, internalize the technique, add it to his arsenal. And when the time came — when they reached the Convergence, when the Magisterium force contested their access, when the next impossible situation required an impossible solution — he would have it.
One more spell. One more cost. One more hole in the floor.
The pages waited. The Foundation hummed. The guardian's amber pulse counted seconds that Valen wasn't tracking because the Grimoire had his attention and the Grimoire did not share.
He stared at page forty-one. The incantation for Sever, written in the dead god's hand, offering itself with the quiet generosity of a thing that had never given anything for free.
He didn't close the book.
