Mathematicians do not write for the circulating library.

A man may be buoyed up by the efflation of his wild desires to brave any imaginable peril; but he cannot calmly see one he loves braving the same peril; simply because he cannot feel within turn that which prompts another. He sees the danger, and feels not the power that is to overcome it.

In all sincere speech there is power, not necessarily great power, but as much as the speaker is capable of.

Endeavour to be faithful, and if there is any beauty in your thought, your style will be beautiful; if there is any real emotion to express, the expression will be moving.

Science is the systematic classification of experience.

Mathematicians do not write for the circulating library.

Literature is at once the cause and the effect of social progress.