“Look at the pattern this seashell makes. The dappled whorl, curving inward to infinity. That’s the shape of the universe itself. There’s a constant pressure, pushing toward pattern. A tendency in matter to evolve into ever more complex forms. It’s a kind of pattern gravity, a holy greening power we call viriditas, and it is the driving force in the cosmos. Life, you see. Like these sand fleas and limpets and krill— although these krill in particular are dead, and helping the fleas. Like all of us,” waving a hand like a dancer. “And because we are alive, the universe must be said to be alive. We are its consciousness as well as our own. We rise out of the cosmos and we see its mesh of patterns, and it strikes us as beautiful. And that feeling is the most important thing in all the universe— its culmination, like the color of the flower at first bloom on a wet morning. It’s a holy feeling, and our task in this world is to do everything we can to foster it. And one way to do that is to spread life everywhere. To aid it into existence where it was not before, as here on Mars.”

This to her was the supreme act of love, and when she talked about it, even if they didn’t fully understand, they felt the love. Another push, another kind of warmth in the envelope of cold. She touched them as she talked, and they dug for shells as they listened. “Mud clam! Antarctic limpet. Glass sponge, watch out, it can cut you.” It made Nirgal happy just to look at her.

And one morning; as they stood from their dig to do more beachcombing, she returned his gaze, and he recognized her expression— it was precisely the expression on his face when he looked at her, he could feel it in his muscles. So he made her happy too! Which was intoxicating.

He held her hand as they walked the beach. “It’s a simple ecology in some ways,” she said as they knelt to inspect another clam shell. “Not many species, and the food chains are short. But so rich. So beautiful.” She tested the temperature of the lake with her hand. “See the mist? The water must be warm today.”

By this time she and Nirgal were alone, the other kids running around the dunes or up and down the strand. Nirgal bent down to touch a wave as it stalled out next to their feet, leaving behind a white lace of foam, “It’s two seventy-five and a little over.”

“You’re so sure.”

“I can always tell.”

“Here,” she said, “do I have a fever?”

He reached up and held her neck. “No, you’re cool.”

“That’s right. I’m always about half a degree low. Vlad and Ursula can’t figure out why.”

“It’s because you’re happy.”