There were 183 of us freshmen, and a bowling ball hanging from the three – story ceiling to just above the floor. Feynman walked in and, without a word, grabbed the ball and backed against the wall with the ball touching his nose. He let go, and the ball swung slowly 60 feet across the room and back – stopping naturally just short of crushing his face. Then he took the ball again, stepped forward, and said: “I wanted to show you that I believe in what I’m going to teach you over the next two years.”