In the train I sat opposite to him; and, now that he had taken his beard off, I couldn't see that he had changed very remarkably in outward appearance after all. Nevertheless I distrusted my own impression. I knew that I was full of pre-conceptions about him, knew too much of his astonishing case to observe impartially and reliably. There are some things--some scents for example--that you have to make up your mind immediately about or else to remain in indecision. The longer you delay the less sure you become. So I found it with his face in the electric-lighted Tube. It was, of course, astoundingly young for a man in the middle forties; but call him thirty-five and much of the wonder disappeared. The most that a casual acquaintance would have been likely to remark was, "How the deuce does Rose manage to keep so extraordinarily young-looking?" True, his friend Trenchard had failed to recognise the man with whom he had fought at La Bassée, but that meant little. There were millions of men in France, each the spit of the rest for mud and momentariness of acquaintance. To-day, by mere association of times and places and battles, these men are in fact resuming acquaintances they have no recollection of ever having begun. "Oh, I've a rotten memory for faces--seen So-and-so lately? And I say, do you know anybody who wants to take a quiet place for a month?" That, no doubt, had been the substance of that conversation in the Gloucester Road wine-bar.... And there was another thing of which I shall have more to say by and by. I began to suspect that whatever strange element in Derwent Rose had brought him to this pass, that element reacted on those of us who knew his secret. He probably became less extraordinary in our eyes as contemplation of him made us not quite ordinary ourselves. Julia Oliphant (it seemed to me) he had already influenced, constrained, isolated. We were getting used to him. But I shall return to this. In the meantime I was considerably cheered. He remembered that other night; he wanted to apologise for the lunacy of it; he had given a perfectly coherent account of his present whereabouts and how he came to be there, and his summing-up of the fellows whose basic domestic factor was a pint of methylated spirits had given me a clear and straightforward picture. As for the rest--why he had left Cambridge Circus, what it was that he found restful in those slowed-down films, and especially the measured carefulness of his speech--for the present these things could wait.