Nothing is less instructive than a machine.

Today it is not nearly enough to be a saint, but we must have the saintliness demanded by the present moment, a new saintliness, itself also without precedent.

There are only two things that pierce the human heart. One is beauty. The other is affliction.

The most important part of teaching is to teach what it is to know.

It is precisely those artists and writers who are most inclined to think of their art as the manifestation of their personality who are in fact the most in bondage to public taste.

Art is the symbol of the two noblest human efforts: to construct and to refrain from destruction.

Fire destroys that which feeds it.