The next lesson began with a wall.
Not a dramatic wall. Not one of the old monumental ones near the gates or the broad courtyard facades of wealthy men who wanted stone to speak before they did. This one stood in a forgotten side lane above the tannery quarter, half plastered, half exposed, patched over two centuries by three different ambitions and at least one lazy mason. To Yusuf, at first glance, it looked like every other tired wall in Fez.
Samira placed a hand on it and said, "Read it."
Yusuf stared.
"It's a wall."
Idris, leaning against the opposite side of the lane with his arms folded, said, "You're improving. At least now your first wrong answer is shorter."
Yusuf ignored him and looked again.
Morning light had only just climbed into the upper reaches of the lane. The lower stone still held the night's coolness. Above, laundry lines crossed from roof to roof, and somewhere in the courtyard beyond the wall a woman was grinding grain with the patient rhythm of someone who had accepted labor too early in life to resent it every day. The whole lane smelled of damp plaster, tannery runoff, smoke from fresh bread, and old dust reawakened by the first sun.
Samira tapped the wall once with two knuckles.
"Read it."
So Yusuf made himself stop seeing wall and start seeing parts.
The lower stones were older. Larger blocks, worn smooth at the edges, each set with a confidence the upper repairs lacked. Above them, plaster spread unevenly in places where cracks had been filled and then ignored. Near the left corner, three narrow projecting stones rose in no obvious pattern except to someone desperate enough to think them useful. Midway up, a timber beam end sat buried in the masonry, old and weather-black. The right side held better grip for hands because the plaster had peeled there.
He exhaled.
"It was repaired twice."
Samira said nothing. Good sign or terrible one.
"The bottom is older than the top. The left side has more holds if a man is willing to trust them. The beam might carry weight if it's not rotten through."
Idris added, "And."
Yusuf looked harder.
The line of the wall was not truly vertical. It leaned out by a breath near the center where the old foundation had shifted. That meant climbing it straight would push the body away from balance. Better to angle from the right, use the rougher stone, then cut left near the beam.
"It lies," he said.
Samira's gaze moved to him. "Explain."
"It looks flatter than it is. If I take it wrong, I peel off."
Samira nodded once. "Better."
She stepped away from the wall and motioned.
"Up."
Yusuf looked at the height. Not immense. One and a half stories perhaps before the parapet edge. No death waiting below. Only injury and shame. Fez's preferred instructional style.
He set his hands to the rougher right-side stone and began climbing.
Immediately the wall corrected his arrogance.
The first holds took his fingers and gave them back badly. The plaster edge that looked strong from below crumbled under his weight, dusting his sleeve white. He adjusted, found the exposed stone, pushed upward, reached for the buried beam, and discovered too late that the wood flexed more than felt respectable.
"Commit," Idris said.
Yusuf bared his teeth. "Everyone here speaks like a sermon with a knife."
"Less talking."
He shifted left, trusting one projecting stone with his foot and another with his palm, then reached the parapet and hauled himself up in a graceless but successful spill of limbs.
Samira joined him a moment later by a route entirely different from the one she had just made him take.
"Why that side," he asked, annoyed already.
"Because enemies don't let you choose the clean face of every wall."
Idris climbed more directly, not because his route was cleaner but because he trusted the old beam in exactly the fraction required and no more. He came over the parapet without breath or comment, which Yusuf was beginning to think might be an actual supernatural talent.
From this roof, the city opened in a lower spread than the night lessons had shown him. Day made different truths visible. Water stains on plaster. Subsidence cracks. Roof additions built by hopeful sons or poor landlords. Tannery smoke drifting in pale ribbons. The geometry of Fez in daylight was less romantic and more argumentative.
Samira crouched by the parapet and pointed to three adjoining houses.
"Tell me how old they are."
Yusuf stared at her. "Do you want me to become a mason."
"No. I want you to stop dying against buildings because you think all stone behaves equally."
He looked.
The nearest house showed its age in the base stones, large and settled, with later plaster hiding old repairs. The middle one wore newer plaster but older cedar lintels, suggesting money spent on appearance while structure aged underneath. The third had a crude upper addition in brick too red for the original build, lighter, less trustworthy, built in haste or shortage.
He answered.
Samira corrected two details and made him explain why they mattered physically.
Because old stone held edges differently.
Because newer brick chipped under sudden weight.
Because patched parapets broke where pride met cheap repair.
Because the city was not one city. It was layers of decisions and shortages and disasters surviving on top of one another.
The weight of stone.
Not just mass. History.
By the third roof, Yusuf understood the lesson more deeply and liked it less. Movement here was not merely speed or nerve. It was reading how time had shaped matter. Which walls had sagged. Which courtyards had been expanded. Which beams were carrying honest weight and which only still existed because no one had leaned on them too hard lately.
They spent the morning moving across districts not by the most efficient route but by the most educationally cruel one.
Samira would stop without warning and point.
"Which parapet breaks first."
"That one."
"Why."
"Fresh patching over older crack."
"Good. Which roof sounds hollow."
"That terrace."
"Why."
"Storage room beneath. Less support in the center."
"Good. Which wall was once an exterior boundary."
Yusuf squinted at the line of stone. "The one with older drainage cuts."
"Better."
Idris added questions of his own when Samira wanted variety in torment.
"Where would a fleeing man go wrong."
"There."
"Why."
"He'd choose the low roof and miss the loose tiles."
"Where would a watcher hide."
"Behind the laundry wall."
"Too obvious."
Yusuf looked again. Not the laundry wall then. The chimney stack with soot dark enough to swallow cloth. Better.
Idris nodded once.
By noon the sun had sharpened and Fez smelled more intensely of itself. Bread cooling. Tannery acid. Spice heat. Animal waste. Orange peel crushed underfoot. Dust rising from the market routes. The city's honesty worsened with temperature.
They paused on a shaded terrace above a baker's lane while a woman below shouted at three boys for stealing flatbread they had clearly not yet managed to steal properly.
Yusuf drank from a skin and flexed his aching fingers.
"So all of this is architecture now."
Samira sat on the parapet and unwrapped half a piece of bread from cloth. "All of this has always been architecture. You just thought stone existed for walls and not for decisions."
"That sounds insulting."
"It is."
Idris leaned in the shade near a chimney and said, "Cities are written physically before they're written politically."
Yusuf looked at him. "That sounded like Farid."
"No," Samira said. "Farid would have made it unbearable."
"Thank you," Idris said dryly.
They moved again.
This time into older roofs near the booksellers' quarter where houses had been rebuilt so often that lines of construction became a visible argument between centuries. Yusuf stood before a narrow passage roofed partly by cedar beams and partly by later brick vaulting and saw, for the first time without being told, why one side would support a running leap and the other would not.
He pointed before Samira could ask.
"The brick fails."
She looked at him. "Why."
"It was added after the beams. Different load. The side cracks spread wrong."
Samira's expression did not exactly soften.
But something in it acknowledged the answer.
Good, perhaps. Though she did not say it.
Instead she had him cross the cedar beam stretch at speed.
Cruel woman.
He made it.
Not elegantly. But his body had begun to obey the city's grammar instead of only his own fear. Hands found roughness where eyes had only half believed it. Feet landed lighter. Weight shifted before thought caught up. He was still a student, still ugly in motion beside Idris and Samira, but no longer merely a body surviving each obstacle by insult and chance.
That frightened him in a quieter way than the first jump had.
Because skill entering the body could become invisible to the mind very quickly. One day it was effort. The next it was assumption. And assumption, he had learned, got men killed.
The last lesson came late in the afternoon on a roofline above an older section of Fez where one abandoned house had partially collapsed inward, leaving a jagged opening in the terrace and exposing the rooms below.
Samira stopped him at the threshold.
"Look."
Yusuf did.
The collapse had eaten through two floors. A ceiling beam jutted broken over open space. Wall niches stared into light that had not touched them in years. Torn mats lay in the room below under dust and fallen plaster. The ruin smelled of dry rot, pigeon filth, and trapped heat.
"What do you see."
"A bad decision."
Idris almost laughed. Almost.
Samira ignored the joke. "More."
Yusuf crouched, studying the broken lines.
The collapsed section had fallen inward because the support wall at the alley side had weakened first. Water damage maybe. Or old foundation slip. The surviving left edge still held some weight because the beam ties remained there. The right side was false stability. One more careless step and the rest might go.
"Route on the left," he said. "Close to the surviving wall."
"Why."
"The beam tension is still carried there."
Samira nodded. "Cross."
He looked at her. Then at the ruin.
There was no dramatic gap this time. No obvious jump. Just a sequence of broken stone and exposed beam over rooms deep enough to make injury expensive.
Worse.
Because this required not courage in one burst, but judgment sustained through movement.
He stepped onto the surviving edge and felt at once the subtle shift under the sole. The old stone held. The loose dust did not. He crouched lower, used the wall with one hand, and moved over the broken terrace one careful step at a time.
Midway across, a fragment of plaster gave way under his heel and clattered into the room below.
He froze.
The whole structure answered with a soft groan.
Not collapse. Warning.
Yusuf breathed once, slowly, and shifted more weight into the wall hand before continuing. Left edge. Beam line. Do not trust the clean-looking patch. Trust the old stress.
He reached the far side and stepped onto solid terrace.
Only then did his shoulders unclench.
Idris crossed after him in half the time. Samira in less.
Yusuf looked back at the ruin.
"People lived there."
"Yes," Samira said.
The answer was so simple it opened wider than commentary would have.
The house had once held meals, quarrels, sleeping children, perhaps old books, perhaps songs. Now it was a training line over absence. Stone remembered use long after people were gone. Walls kept history in weight and weakness both.
The city was built on that truth. Survival by accumulation. By repair. By carrying new lives over old fractures and pretending the old ones no longer dictated the floor.
Yusuf said quietly, "So every wall tells you what failed."
Idris looked at him with that unreadable calm.
"And what endured."
That completed it.
The weight of stone was not only danger. It was memory made physical. A city could be read through what broke, what sagged, what had been repaired carefully, what had been covered cheaply, what still held because someone long dead had built with pride instead of haste.
As evening approached and they made their way back toward the hidden bureau's roof routes, Yusuf found himself looking at every wall differently. Not as backdrop. Not as obstacle only. But as evidence.
Fez itself had become a witness.
And witnesses, he was learning, rarely spoke plainly.
End of Chapter 32