Excerpt from The Golden Mean by Annabel Lyon, plus links to reviews, author biography & more

One

The rain falls in black cords, lashing my animals, my men, and my wife, Pythias, who last night lay with her legs spread while I took notes on the mouth of her sex, who weeps silent tears of exhaustion now, on this tenth day of our journey. On the ship she seemed comfortable enough, but this last overland stage is beyond all her experience and it shows. Her mare stumbles; she's let the reins go loose again, allowing the animal to sleepwalk. She rides awkwardly, weighed down by her sodden finery. Earlier I suggested she remain on one of the carts but she resisted, such a rare occurrence that I smiled, and she, embarrassed, looked away. Callisthenes, my nephew, offered to walk the last distance, and with some difficulty we helped her onto his big bay. She clutched at the reins the first time the animal shifted beneath her.

"Are you steady?" I asked, as around us the caravan began to move.

"Of course."

Touching. Men are good with horses where I come from, where we're returning now, and she knows it. I spent yesterday on the carts myself so I could write, though now I ride bareback, in the manner of my countrymen, a ball-busting proposition for someone who's been sedentary as long as I have. You can't stay on a cart while a woman rides, though; and it occurs to me now that this was her intention.

I hardly noticed her at first, a pretty, vacant-eyed girl on the fringes of Hermias's menagerie. Five years ago now. Atarneus was a long way from Athens, across the big sea, snug to the flank of the Persian Empire. Daughter, niece, ward, concubine - the truth slipped like silk.

"You like her," Hermias said. "I see the way you look at her." Fat, sly, rumoured a money-changer in his youth, later a butcher and a mercenary; a eunuch, now, supposedly, and a rich man. A politician, too, holding a stubborn satrapy against the barbarians: Hermias of Atarneus. "Bring me my thinkers!" he used to shout. "Great men surround themselves with thinkers! I wish to be surrounded!" And he would laugh and slap at himself while the girl Pythias watched without seeming to blink quite often enough. She became a gift, one of many, for I was a favourite. On our wedding night she arrayed herself in veils, assumed a pose on the bed, and whisked away the sheets before I could see if she had bled. I was thirty-seven then, she fifteen, and gods forgive me but I went at her like a stag in rut. Stag, hog.

"Eh? Eh?" Hermias said the next morning, and laughed.

Night after night after night. I tried to make it up to her with kindness. I treated her with great courtliness, gave her money, addressed her softly, spoke to her of my work. She wasn't stupid; thoughts flickered in her eyes like fish in deep pools. Three years we spent in Atarneus, until the Persians breathed too close, too hot. Two years in the pretty town of Mytilene, on the island of Lesvos, where they cobbled the floor of the port so enemy ships couldn't anchor. Now this journey. Through it all she has an untouchable dignity, even when she lies with her knees apart while I gently probe for my work on generation. Fish, too, I'm studying, field animals, and birds when I can get them. There's a seed like a pomegranate seed in the centre of the folds, and the hole frilled like an oyster. Sometimes moisture, sometimes dryness. I've noted it all.

"Uncle."

I follow my nephew's finger and see the city on the marshy plain below us, bigger than I remember, more sprawling. The rain is thinning, spitting and spatting now, under a suddenly lucid gold-grey sky.

"Pella," I announce, to rouse my dripping, dead-eyed wife. "The capital of Macedon. Temple there, market there, palace. You can just make it out. Bigger than you thought?"

She says nothing.

"You'll have to get used to the dialect. It's fast, but not so different really. A little rougher."

Excerpted from The Golden Mean by Annabel Lyon Copyright © 2010 by Annabel Lyon. Excerpted by permission of Knopf, a division of Random House, Inc. All rights reserved. No part of this excerpt may be reproduced or reprinted without permission in writing from the publisher.