"One learns quickness from boxing," Edgar said carelessly. "That is one of the advantages of it. It teaches one to think quickly and act quickly; and if one can fight with one's fists, of course one can fight with a knife. It was a boxing trick I used, and a very useful one, and more easy than it would be against a good boxer, who would have hit me with his left before I could strike my blow, but of course this fellow had no idea of doing that, so that unless I had failed to grasp his wrist it was a certainty. Did the other hurt you? I heard you go down with a crash."