The length of a man's outspread arms is equal to his height.

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.

Men born in hot countries love the night because it refreshes them and have a horror of light because it burns them.

Nature varies the seed according to the variety of the things she desires to produce in the world.

Any color is more distinctly seen when opposed to its contrary: thus, black on white, blear near yellow, green near red, and so on.

The boundaries of bodies are the least of all things.

Every action done by nature is done in the shortest way.