The faculty of imagination is both the rudder and the bridle of the senses.

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.

The color of the object illuminated partakes of the color of that which illuminates it.

He who truly knows has no occasion to shout.

In rivers, the water that you touch is the last of what has passed and the first of that which comes; so with present time.

I have from an early age abjured the use of meat, and the time will come when men such as I will look upon the murder of animals as they now look upon the murder of men.

It's not enough that you believe what you see. You must also understand what you see.