We were on the steamer from America to Japan and, so, for instance, I took part in the dances in the evening. Paul [Dirac], somehow, didn't like that too much but he would sit on a chair and look at the dances. Once I came back from a dance and took the chair beside him and he asked "Heisenberg, why do you dance?" I said, "Well, when there are nice girls, it is a pleasure to dance." He thought for a long time about it, and after about five minutes he said, "Heisenberg, how do you know beforehand that the girls are nice?"
Thursday, August 28, 2008
Physicist Werner Heisenberg, quoted in Gino Segrè's Faust in Copenhagen (2007) at 93: