The fundamental concept in social science is Power, in the same sense in which Energy is the fundamental concept in physics.

To understand a name you must be acquainted with the particular of which it is a name.

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

Mysticism is, in essence, little more than a certain intensity and depth of feeling in regard to what is believed about the universe.

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

No man can be a good teacher unless he has feelings of warm affection toward his pupils and a genuine desire to impart to them what he believes to be of value.

We know very little, and yet it is astonishing that we know so much, and still more astonishing that so little knowledge can give us so much power.