There are some philosophers who exist to uphold the status quo, and others who exist to upset it — Marx, of course, belongs to the second lot. For my part, I should reject both those as not being the true business of a philosopher, and I should say the business of a philosopher is not to change the world but to understand it, which is the exact opposite to what Marx said.

Bertrand Russell (1872-1970) English mathematician and philosopher

Interview by Woodrow Wyatt, BBC TV (1959)

Collected in Bertrand Russell's BBC Interviews (1959) [UK] and Bertrand Russell Speaks His Mind (1960) [US]. Reprinted (abridged) in The Humanist (1982-11/12), and in Russell Society News, #37 (1983-02).