The creative principle [of science] resides in mathematics.

Every day I remind myself that my inner and outer life are based on the labors of other men, living and dead, and that I must exert myself in order to give in the same measure as I have received and am still receiving.

If everybody lived as I do, surely the writing of romance novels would never have come into being.

Whatever there is of God and goodness in the universe, it must work itself out and express itself through us. We cannot stand aside and let God do it.

Inner freedom is an infrequent gift of nature and a worthy object for the individual.

It is abhorrent to me when a fine intelligence is paired with an unsavory character.

A perfection of means, and confusion of aims, seems to be our main problem.