“In science, as in art, and, as I believe, in every other sphere of human activity, there may be wisdom in a multitude of counsellors, but it is only in one or two of them.”

“It is because the body is a machine that education is possible. Education is the formation of habits, a superinducing of an artificial organization upon the natural organization of the body.”

“The results of political changes are hardly ever those which their friends hope or their foes fear.”

“Science is simply common sense at its best, that is, rigidly accurate in observation, and merciless to fallacy in logic.”

“The best men of the best epochs are simply those who make the fewest blunders and commit the fewest sins.”

“My business is to teach my aspirations to confirm themselves to fact, not to try and make facts harmonize with my aspirations.”

“The great thing in the world is not so much to seek happiness as to earn peace and self-respect.”

“Try to learn something about everything and everything about something.”

“In scientific work, those who refuse to go beyond fact rarely get as far as fact.”

“If a man cannot do brain work without stimulants of any kind, he had better turn to hand work it is an indication on Nature's part that she did not mean him to be a head worker.”