they were all about me, they sprang up trying to reach my throat; and whenever their claws touched me, horrible thoughts came into my mind and unutterable desires dominated my heart. I planned bestial things as these creatures leaped around me, and planned them with a masterly cunning. A great red-eyed murder was among the foremost of those furry things from whom I feebly strove to defend my throat. Suddenly it seemed to me good that I should kill my brother. It seemed important to me that I should not risk being punished. I knew where a revolver was kept; after I had shot him, I would dress the body up and put flour on the face like a man that had been acting as a ghost. It would be very simple. I would say that he had frightened me—and the servants had heard us talking about ghosts. There were one or two trivialities that would have to be arranged, but nothing escaped my mind. Yes, it seemed to me very good that I should kill my brother as I looked into the red depths of this creature's eyes. But one last effort as they dragged me down—"If two straight lines cut one another," I said, "the opposite angles are equal. Let AB, CD, cut one another at E, then the angles CEA, CEB equal two right angles (prop. xiii.). Also CEA, AED equal two right angles."
I moved towards the door to get the revolver; a hideous exultation arose among the beasts. "But the angle CEA is common, therefore AED equals CEB. In the same way CEA equals DEB. Q.E.D." It was proved. Logic and reason re-established themselves in my mind, there were no dark hounds of sin, the tapestried chairs were empty. It seemed to me an inconceivable thought that a man should murder his brother.
