Most men are of naught more use in their lives but as machines for turning food into sh*t.

Who sows virtue ought to reap honour.

I have wasted my hours.

Just as courage is the danger of life, so is fear its safeguard.

The first of all simple colours is White ... We shall set down White for the representative of light, without which no colour can be seen; Yellow for the earth; Green for water; Blue for air; Red for fire; and Black for total darkness.

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.

I am not to blame for putting forward, in the course of my work on science, any general rule derived from a previous conclusion.