We must make automatic and habitual, as early as possible, as many useful actions as we can. . . . The more of the details of our daily life we can hand over to the effortless custody of automatism, the more our higher powers of mind will be set free for their own proper work.

(Five) thinkers since Galileo, each informing his successor of what discoveries his own lifetime had seen achieved, might have passed the torch of science into our hands as we sit here in this room. Indeed, for the matter of that, an audience much smaller than the present one, an audience of some 5 or 6 score people, if each person in it could speak for his own generation, would carry us away to the black unknown of the human species, to days without a document or monument to tell their tale.

The difference between objective and subjective extension is one of relation to a context solely.

The soul is stronger than its surroundings.

You must bring out of each word its practical cash-value, set it at work within the stream of your experience.

When a superior intellect and a psychopathic temperament coalesce in the same individual, we have the best possible condition for the kind of effective genius that gets into the biographical dictionaries.

To know one thing thoroughly would be to know the universe.