The third-rate mind is only happy when it is thinking with the majority. The second-rate mind is only happy when it is thinking with the minority. The first-rate mind is only happy when it is thinking

— A. A. Milne

One can relish the varied idiocy of human action during a panic to the full, for while it is a time of great tragedy, nothing is being lost but money

— John Kenneth Galbraith, on the Crash of 1929