An ideal cannot wait for its realization to prove its validity.

The mass of mankind is divided into two classes, the Sancho Panza's who have a sense for reality, but no ideals, and the Don Quixote's with a sense for ideals, but mad.

Sanity is madness put to good use.

The arts must study their occasions; they must stand modestly aside until they can slip in fitly into the interstices of life.

Nothing can be meaner than the anxiety to live on, to live on anyhow and in any shape.

Habit is stronger than reason.

Facts are all accidents. They all might have been different. They all may become different. They all may collapse altogether.