Progress has not followed a straight ascending line, but a spiral with rhythms of progress and retrogression, of evolution and dissolution.

A man who cannot command himself will always be a slave.

Riches amassed in haste will diminish; but those collected by hand and little by little will multiply.

Courage and modesty are the most unequivocal of virtues, for they are of a kind that hypocrisy cannot imitate; they too have this quality in common, that they are expressed by the same color.

Nature is the living, visible garment of God.

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.

One should not search for anything behind the phenomena. They themselves are the message.