Every human being, like every animal, wants to live in what is felt to be a safe environment — an environment where you won’t be exposed to unexpected peril. Now, when a man tells you that something you’ve always believed was in fact not true, it gives you a frightful shock and you think, “Oh! I don’t know where I am. When I think I’m planting my foot upon the ground, perhaps I’m not.” And you get into a terror.

Bertrand Russell (1872-1970) English mathematician and philosopher

Interview by Woodrow Wyatt, BBC TV (1959)

On resistance to scientific discovery.

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).