I am as firmly convinced that religions do harm as I am that they are untrue.

Religion is based, I think, primarily and mainly upon fear. It is partly the terror of the unknown and partly, as I have said, the wish to feel that you have a…

I found one day in school a boy of medium size ill-treating a smaller boy. I expostulated, but he replied: 'The bigs hit me, so I hit the babies; that's fair.'…

I say quite deliberately that the Christian religion, as organized in its churches, has been and still is the principal enemy of moral progress in the world.

Atheists and the unchurched undervalue the extent to which they are getting a free ride on the social strength that religious-based virtue provides.

'It was the scriptures that urged the people of this land to be tolerant and forgiving of others, even though they disagreed with their values and ways of life…

Usually, terrible things that are done with the excuse that progress requires them are not really progress at all, but just terrible things.