"And then one morning the soldiers grew suddenly still as the heavy latches were lifted and turned. Just before the doors slid apart, a man from Pisa took the opportunity to say, "The air is thin. We're in the mountains." Alessandro straightened his back and raised his head. The mountains, unpredictable in their power, were the heart of his recollection, and he knew that the Pisano was right. He had known it all along from the way the train took the many grades, from the metallic thunder of bridges over which they had run in the middle of the night, and from the white sound of streams falling and flowing in velocities that could have been imparted only by awesome mountainsides."