The game was over. Babe, who had made one of his famous drives that day, was tired and wanted to go home. “Not tonight, Babe,” I said. “Tonight you go to college with me. You're going to take scientific tests which will reveal your secret.” “Who wants to know it?” asked Babe. “I want to know it,” I replied, “and so do several hundred thousand fans. We want to know why it is that one man has achieved a unique batting skill like yours—just why you can slam the ball as nobody else in the world can.

The Psychology of the Home Run in 1921
Hugh S. Fullerton
