It can be shown that a mathematical web of some kind can be woven about any universe containing several objects. The fact that our universe lends itself to mathematical treatment is not a fact of any great philosophical significance.

Without civic morality communities perish; without personal morality their survival has no value.

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.

There are certain things that our age needs, and certain things that it should avoid. It needs compassion and a wish that mankind should be happy; it needs the desire for knowledge and the determination to eschew pleasant myths; it needs, above all, courageous hope and the impulse to creativeness.

Why is propaganda so much more successful when it stirs up hatred than when it tries to stir up friendly feeling?

The qualities most needed are charity and tolerance, not some form of fanatical faith such as is offered to us by the various rampant isms

The commonest objection to birth control is that it is against nature.