“Religion is based, I think, primarily and mainly upon fear.”

Bertrand Russell:

Religion is based, I think, primarily and mainly upon fear. It is partly the terror of the unknown, and partly… the wish to feel that you have a kind of elder brother who will stand by you in all your troubles and disputes. Fear is the basis of the whole thing – fear of the mysterious, fear of defeat, fear of death. Fear is the parent of cruelty, and therefore it is no wonder if cruelty and religion have gone hand-in-hand.

Why I Am Not a Christian [Amazon]