Science is organized knowledge. Wisdom is organized life.

Two things awe me most, the starry sky above me and the moral law within me.

Maximum individuality within maximum community

Two things strike me dumb: the infinite starry heavens, and the sense of right and wrong in man.

The science of mathematics presents the most brilliant example of how pure reason may successfully enlarge its domain without the aid of experience

What are the aims which are at the same time duties? They are perfecting of ourselves, the happiness of others.

Melancholy characterizes those with a superb sense of the sublime.