Bradman is a whole class above any batsman who has ever lived: if Archimedes, Newton and Gauss remain in the Hobbs class, I have to admit the possibility of a class above them, which I find difficult to imagine. They had better be moved from now on into the Bradman class.

Quoted by C. P. Snow in his introduction to reprints of the book. - A Mathematician's Apology (1941)