What Plato was really asking was perhaps why a horse was a horse, and not, for example, a cross between a horse and a pig.

The sophists were as a rule men who had traveled widely and seen different forms of government. Both conventions and local laws in the city-states could vary widely. This led the Sophists to raise the question of what was natural and what was socially induced. By doing this, they paved the way for social criticism in the city-state of Athens.

A hydrogen atom in a cell at the end of my nose was once part of an elephant's trunk. A carbon atom in my cardiac muscle was once in the tail of a dinosaur.

Superstitious." What a strange word. If you believed in Christianity or Islam, it was called "faith". But if you believed in astrology or Friday the thirteenth it was superstition! Who had the right to call other people's belief superstition?

A joker is a little fool who is different from everyone else. He's not a club, diamond, heart, or spade. He's not an eight or a nine, a king or a jack. He is an outsider. He is placed in the same pack as the other cards, but he doesn't belong there. Therefore, he can be removed without anybody missing him.

How terribly sad it was that people are made in such a way that they get used to something as extraordinary as living.

A lot of people experience the world with the same incredulity as when a magician pulls a rabbit out of a hat.…We know that the world is not all sleight of hand and deception because we are in it, we are part of it. Actually we are the white rabbit being pulled out of the hat. The only difference beween us and the white rabbit is that the rabbit does not realize it is taking part in a magic trick.