The greatest discovery of the 20th Century is that our attitude of mind determines our quality of life, not circumstances.

Do something everyday for no other reason than you would rather not do it, so that when the hour of dire need draws nigh, it may find you not unnerved and untrained to stand the test.

All that we need explicitly to note is that, the more the passive attention is relied on, by keeping the material interesting; and the less the kind of attention requiring effort is appealed to; the more smoothly and pleasantly the classroom work goes on.

Far from being antecedent principles that animate the process, law, language, truth are but abstract names for its results.

A man has as many social selves as there are individuals who recognize him.

Science can tell us what exists; but to compare the worths, both of what exists and of what does not exist, we must consult not science, but what Pascal calls our heart.

... I am the same personal being who in old times upon the Earth had those experiences.