The trouble with the world is that the stupid are cocksure and the intelligent are full of doubt.

Escape from boredom is one of the really powerful desires of almost all human beings.

There is exactly the same degree of possibility and likelihood of the existence of the Christian God as there is of the existence of the Homeric god. I cannot prove that either the Christian god or the Homeric gods do not exist, but I do not think that their existence is an alternative that is sufficiently probable to be worth serious consideration.

Humanistic ethics is based on the principle that only humans themselves can determine the criterion for virtue and not an authority transcending us.

Berkeley retains the merit of having shown that the existence of matter is capable of being denied without absurdity.

No nation was ever so virtuous as each believes itself, and none was ever so wicked as each believes the other.

I think the subject which will be of most importance politically is Mass Psychology... Its importance has been enormously increased by the growth of modern methods of propaganda. Although this science will be diligently studied, it will be rigidly confined to the governing class. The populace will not be allowed to know how its convictions are generated.