Simon the shoemaker’s shop stood close to the southwestern corner of the Athenian agora, near the boundary stone marking the edge of the market square and across a narrow dirt lane from the Tholos, the round building where the executive committee of the Boule met. Inside the shop, Simon pounded iron hobnails into the sole of a sandal. His son worked with an awl, shaping bone eyelets through which rawhide laces would go. Two grandsons cut leather for more shoes.

Outside, in the shade of an olive tree, a man in his mid-fifties strode back and forth, arguing with a knot of younger men and youths. He was engagingly ugly: bald, heavy-browed, snub-nosed, with a gray beard that should have been more neatly trimmed. “And so you see, my friends,” he was saying, “my daimon has told me that this choice does indeed come from the gods, and that something great may spring from it. Thus, though I love you and honor you, I shall obey the spirit inside me rather than you.”

“But, Sokrates, you have already given Athens all she could want of you,” exclaimed Kritias, far and away the most prominent of the men gathered there and, next to Sokrates, the eldest. “You fought at Potidaia and Delion and Amphipolis. But the last of those battles was seven years ago. You are neither so young nor so strong as you used to be. You need not go to Sicily. Stay here in the polis. Your wisdom is worth more to the city than your spear ever could be.”

The others dipped their heads in agreement. A youth whose first beard was just beginning to darken his cheeks said, “He speaks for all of us, Sokrates. We need you here more than the expedition ever could.”

“How can one man speak for another, Xenophon?” Sokrates asked. Then he held up a hand. “Let that be a question for another time. The question for now is, why should I be any less willing to fight for my polis than, say, he is?”