Of the twenty or so civilizations known to modern Western historians, all except our own appear to be dead or moribund, and, when we diagnose each case... we invariably find that the cause of death has been either War or Class or some combination of the two.

No being can be what he is unless he is putting his essence into action in his field.

I do not believe that civilizations have to die because civilization is not an organism. It is a product of wills.

Immaturity means self-centeredness, inability to compromise, to rise above hurt feelings, to postpone immediate pleasures in favor of future benefits, or to do unpleasant chores when they need to be done.

The twentieth century will be chiefly remembered by future generations not as an era of political conflicts or technical inventions, but as an age in which human society dared to think of the welfare of the whole human race as a practical objective.

The penalty of affluence is that it cuts one off from the common lot, common experience, and common fellowship. In a sense it outlaws one automatically from one's birthright of membership in the great human family.

The equation of religion with belief is rather recent.