“The example of syllogism that he had learned in Kiseveter's logic - Caius is a man, men are mortal, therefore Caius is mortal - had seemed to him all his life correct only as regards Caius, but not at all as regards himself. In that case it was a question of Caius, a man, an abstract man, and it was perfectly true, but he was not Caius, and was not an abstract man.”