All thoughts start from emotions.

The motive power is the cause of all life.

O Time with your teethy years! You swallow up all things little by little in a slow-motion, wrinkling process of dying.

He turns not back who is bound to a star.

Those who become enamoured of the art, without having previously applied to the diligent study of the scientific part of it, may be compared to mariners who put to the sea in a ship without rudder or compass and therefore cannot be certain of arriving at the wished for port.

Art is never finished, only abandoned.

The fox when it sees a flock of herons or magpies or birds of that kind, suddenly flings himself on the ground with his mouth open to look as he were dead; and these birds want to peck at his tongue, and he bites off their heads.