A religion, even if it calls itself a religion of love, must be hard and unloving to those who do not belong to it.

Intolerance of groups is often, strangely enough, exhibited more strongly against small differences than against fundamental ones.

I have found little that is 'good' about human beings on the whole. In my experience most of them are trash, no matter whether they publicly subscribe to this or that ethical doctrine or to none at all. That is something that you cannot say aloud, or perhaps even think.

I no longer count as one of my merits that I always tell the truth as much as possible; it has become my metier.

Religion originates in the child's and young mankind's fears and need for help. It cannot be otherwise.

I have never doubted that religious phenomena are only to be understood on the pattern of the individual neurotic symptoms familiar to us.

Without love we fall ill.