It has become a commonplace that aggressiveness also often has its roots in fear. I am inclined to think that this theory has been pushed too far. [...] The type of aggressiveness that is the outcome of timidity is not, I think, that which inspires great leaders; the great leaders, I should say, have an exceptional self-confidence which is not only on the surface, but penetrates deep into the subconscious.

One must care about a world one will not see.

I don't like the spirit of socialism - I think freedom is the basis of everything.

The whole of theology, in regard to hell no less than to heaven, takes it for granted that Man is what is of most importance in the Universe of created beings. Since all theologians are men, this postulate has met with little opposition.

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

Artists are on the average less happy than men of science.

Those who advocate common usage in philosophy sometimes speak in a manner that suggests the mystique of the 'common man.'