Maia put her hand out for the Botticelli book. I took a last look at the Aphrodite and gave it back. She turned the pages and showed me a portrait of a man in a red coat. “We don’t know who he was, some scholar of the time I’ve always thought.”

“I love his face,” I said. “Is that picture in Florentia too?”

“Yes,” Maia said.

“Perhaps I’ll travel there one day.”

“It wouldn’t do you any good. You know they haven’t been painted yet.” Maia smiled.

“Maybe I’ll go there in the time when they have been painted. When I’m grown up and finished being educated, I mean.”

“No.” Maia looked serious now. “No, we’ve been brought here out of time by Pallas Athene for a serious purpose. We’re here to stay now, all of us. We can’t go wandering about in time on expeditions to look at pictures.”

“Why not? Pictures are important.”

“Art is important only as a way of opening the mind to excellence,” Maia said, but she didn’t sound very sincere. She took the book back and closed it. In the seconds I could see it I noticed that it had a circular picture of the Madonna on the cover, surrounded by angels. She put it on a high shelf with other books.

“Oh, please!” I said.

“You know I can’t show you that. I probably shouldn’t have shown you this book at all.”

“How is it that we have the nine Botticelli paintings that we do have?” I asked.

“They were going to be destroyed and we rescued them,” Maia said.

“Mother Hera!” I didn’t often swear, but I couldn’t stop myself blurting it out. “Destroyed!”

“Yes, some terrible things happened in that future you’d like to visit to look at paintings! You’re much better off here. Now, go to bed, and let me know if you need any more sponges.”

I bade her joy of the night and went off thoughtfully down the street. The city looked especially beautiful by moonlight. I raised my arms and murmured a line of a praise-song to Selene Artemis. But my mind was buzzing, not with thoughts of menstruation and marriage, which I had almost forgotten, but with Botticelli. The mysterious figures gathered around in Spring. The smile of his Aphrodite. The thought that our nine paintings would have been destroyed. Was that true of all the art in the city, I wondered? Had Phidias’s gold and ivory Athene in the agora been rescued? How about the Herm I had been crowned before, the one with the mysterious smile? What about the bronze lion on the corner I always patted as I went by? I stopped to pat him now, and the moonlight found an expression of sadness on his bronze face that I had never seen before. His mane had fantastical curls, which I stroked, tracing the whorls. He seemed so real, so solid, so impossible to harm. It was my bleeding body making me sad for no reason, I told myself. My mother had talked about that. But it was true about the Botticellis, Maia had said so.

I gave the lion a last pat and turned to take the last few steps to Hyssop and my bed. All the art, saved, as we children had been saved? But saved for what purpose? Saved to make the city? A worker trundled past, unsleeping, off on some errand in the dark. Had they been saved too? And from where? I opened the door and wondered if I would ever have answers to these questions.

The next summer I taught eleven children to swim with no difficulty. The twelfth was Pytheas. He was a boy from Delphi, so I had seen him at the palaestra, and wrestled with him once or twice, but I did not know him well. I had noticed how beautiful he was, and how unconscious he seemed to be of it. He had an air of confidence that was not quite conceit. I had friends who disliked him because he was so lovely and seemed so effortlessly good at everything. I had been inclined to go along with them without examining why. Teaching him to swim made us friends.

As with the first eleven non-swimmers, I took Pytheas down the slope of the beach until we stood in chest-deep water. Then I had him lie back onto my hand, to learn how the water would support and cradle him. The problem was that he couldn’t relax. It didn’t help that he had essentially no body fat—every curve on his twelve-year-old body was muscle. But Mother Tethys is powerful; he would not have sunk lying back with my palm flat in the small of his back, if he could have found a way to do that. He tensed immediately, every time, and jerked back under the water. The exercise was meant to teach trust of the water, and he couldn’t trust it enough to learn it. Yet he wanted to learn, he wanted it fiercely.

“Human bodies were not made for this,” he muttered, as he went down spluttering one more time and I hauled him back to his feet.

“Truly, you’ll be able to do it if you let yourself go.”

“I know how dolphins swim.”

“I love dolphins. They often swim out by the rocks, there where the sea darkens to wine. When you have learned to swim, you will be able to swim out to them.”

I had never seen anyone try so hard and keep on failing. Pytheas could not float, but he couldn’t believe he could not. He watched me treading water and floating on my back, and couldn’t believe he couldn’t master the skill by sheer strength of will. I tried supporting him on his stomach, telling him it was more like the way dolphins do it, but it worked only a little better. He kept thrashing about and sinking. “Maybe we should try another day,” I said, seeing that he was growing cold and his fingers were wrinkling from the water.

“I want to swim today.” He bit his lip and looked far younger than he was. “I understand I can’t master the art in one day, but I want to make a beginning. This is so stupid. I feel such a fool. I’ve wasted your whole afternoon when I know you want to be in the library.”

“It isn’t a waste teaching you,” I said. “But how do you know that?”

“Septima says you’re always reading in the library when you have a moment.”

“Septima’s always in the library,” I said. It was true. Septima was a tall grey-eyed girl from the Athens hall who could read when she first came, and in the time since had made herself almost an assistant librarian. “Did you ask her about me?”

“When I heard you were teaching swimming.”

“But why her? How do you know her? She’s Athens and you’re Delphi.”

He looked caught out, then raised his chin boldly. “I knew her before.”

“Before you came here?” Even though we were out in the sea with nobody near us, I lowered my voice. “Now I think about it, you look alike. A kind of family resemblance, maybe?”

“She’s my sister,” he admitted. “But here we’re all to be brothers and sisters, so what difference does it make? She’s my friend, and why shouldn’t she be?”

“No reason she shouldn’t be,” I said. “So you asked her about me?”

“I thought she’d know. I only knew you’d won the race. Now I know you’ve taught the others to swim, and you clearly understand the methods, and you’ve been very patient. I want to learn. I want to swim at least a little today. I can’t let it defeat me.”

I think what did it was the way he blamed himself and not me, and the sheer force of his will. “All right, then,” I said. “There is another way, but it’s dangerous. Put your hands on my shoulders. Don’t clutch, and don’t panic and thrash, even if you go under. You could drown us both if you do. Let go of me if you feel yourself sinking. As long as you don’t panic, I can rescue you, but if you drive us both under and I can’t come up, we could both die.”

“All right.” He stood behind me and put one hand on each of my shoulders.

“Now I’m going to slide slowly forward, and I’ll tow you. Keep your arms still, and let your legs come up. I’ll be underneath you.” I slid forward and took one stroke with my arms, drawing him forward. I could feel the whole length of his body on top of mine. He did not clutch or panic, and I kicked my legs gently, swimming for perhaps six or seven strokes and drawing him along on top of me. I turned my head sideways. “Now keep your arms still but kick your legs just a little.” I was ready to put my own legs down and stand up if he panicked now—I knew the slope of the beach well, and I was still in my depth. I had done this before with my little cousins when they were very small. He began to move his legs, and I kept mine still but kept on swimming strongly with my arms, drawing us along parallel to the shore. At last I told him to stop, and put my feet carefully down. He went under for a second but did not panic or thrash.