The greatest discovery of my generation is that a human being can alter his life by altering his attitudes.

Man, whatever else he may be, is primarily a practical being, whose mind is given him to aid in adapting him to this world's life

The teachers of this country, one may say, have its future in their hands.

Social evolution is a resultant of the interaction of two wholly distinct factors: the individual ... bearing all the power of initiative and origination in his hands; and, second, the social environment with its power of adopting or rejecting both him and his gifts. Both factors are essential to change. The community stagnates without the impulse of the individual. The impulse dies away without the sympathy of the community.

The old question of whether there is design is idle. The real question is what is the world, whether or not it have a designer--and that can be revealed only by the study of all nature's particulars.

Everybody should do at least two things each day that he hates to do, just for practice.

I know that you, ladies and gentlemen, have a philosophy, each and all of you, and that the most interesting and important thing about you is the way in which it determines the perspective in your several worlds.