Art is in itself noble; that is why the artist has no fear of what is common. This, indeed, is already ennobled when he takes it up.

Self knowledge is best learned not by contemplation, but by action.

Dispel not, the happy delusions of children.

The history of science is science itself; the history of the individual, the individual.

To know of someone here and there whom we accord with, who is living on with us, even in silence - - this makes our earthly ball a peopled garden.

If one has not read the newspapers for some months and then reads them all together, one sees, as one never saw before, how much time is wasted with this kind of literature.

The highest cannot be spoken; it can only be acted.