Human subtlety will never devise an invention more beautiful, more simple or more direct than does nature because in her inventions nothing is lacking, and nothing is superfluous.

I have been impressed with the urgency of doing. Knowing is not enough; we must apply. Being willing is not enough; we must do.

If you call painting dumb poetry, the painter may call poetry blind painting.

Especially learn how to see.

When the thing taken into union is perfectly adapted to that which receives it, the result is delight and pleasure and satisfaction.

He turns not back who is bound to a star.

Music... is the shaping of the invisible.