When men can no longer be theists, they must, if they are civilized, become humanists.

Life is an irreversible process and for that reason its future can never be a repetition of the past.

Men can know more than their ancestors did if they start with a knowledge of what their ancestors had already learned....That is why a society can be progressive only if it conserves its traditions.

We are concerned in public affairs, but immersed in our private ones.

Art enlarges experience by admitting us to the inner life of others.

It is often very illuminating...to ask yourself how you got at the facts on which you base your opinion. Who actually saw, heard, felt, counted, named the thing, about which you have an opinion?

Ideals are an imaginative understanding of that which is desirable in that which is possible.