↑The Autobiography of Bertrand Russell, London: Routledge, 2000 [London: Allen and Unwin, 1969, Vol. 1], p. 39 ("It appeared to me obvious that the happiness of mankind should be the aim of all action, and I discovered to my surprise that there were those who thought otherwise. Belief in happiness, I found, was called Utilitarianism, and was merely one among a number of ethical theories. I adhered to it after this discovery.").