“But was he human? I know his work, though I haven’t read enough to tackle it yet—most of it’s away and beyond Part II of the Tripos even. I went up with an Open Mathematical Scholarship just before the war, and only did my first year’s reading. I’m beginning this”—he tapped his Treatise on Rigid Dynamics—“on my own. What I mean is,” he went on, after a pause, “my father has been always an abstraction to me. I shouldn’t have worried about him if he had just been a nonentity—it wasn’t playing the game to vanish as he did into space and leave my mother to fend for herself.” “But I heard,” said the Sister, “that your mother had her own private fortune.” “I wasn’t alluding to that side of it,” he admitted. “But he did vanish, didn’t he? Well, as I say, if he had been just a nobody, I shouldn’t have been particularly interested; but he wasn’t. He was the most brilliant man of his generation at Cambridge. For instance, he took up Chinese as a sort of relaxation. They say his is the only really scientific handbook on the study of the language. You see, Sister”—he swerved impatiently on his chair and brought his hand down on the table, whereat she drew a swift inward breath, for the gesture of the son was that of the father—“I’ve always wanted to know whether I’m the son of an inhuman intellect or of a man of flesh and blood. Was he human? That’s what I want to know.” “He was human all right,” she replied quietly. “Too human. Of course he was essentially the scholar—or savant—whatever you like to call it. His work was always to him an intellectual orgy. But he loved the world too. He was a fascinating companion. He seemed to want to get everything possible out of life.” “Why didn’t he get it?” “He was a man,” she said, “of sensitive honour.” Captain Baltazar threw away the flaming match wherewith he was about to light a cigarette. “That licks me,” said he. “How?” “His bolting. Did you know my father very well?” “I’ve told you we were great friends.” “Did you know my mother?” Her eyelids flickered for a moment; but she replied steadily: “No. I was only a student and your father was my private tutor. But I heard—from other people—a great deal about your mother. I believe she died many years ago, didn’t she?” “Yes. When I was five. I barely remember her. I was brought up by my uncle and aunt—her people. They scarcely knew my father and haven’t a good word to say about him. It was only when I grew up and developed a sort of taste for mathematics, that I realized what a swell he was. And I can’t help being fascinated by the mystery of it. There he was, as far as I can gather, full of money, his own (which he walked off with) and of mother’s, beginning to enjoy at thirty a world-wide reputation—and suddenly he disappears off the face of the earth. It wasn’t a question of suicide. For the man who buys a ticket for the next world doesn’t go to peculiar trouble to take all his worldly estate with him. It isn’t reasonable, is it?”