When you realize there is something you don't understand, then you're generally on the right path to understanding all kinds of things.

There is no order of things except in the human mind.

As a Roman philosopher, Cicero, said of him a few hundred years later, Socrates 'called philosophy down from the sky and established her in the towns and introduced her into homes and forced her to investigate life, ethics, good and evil.

The most subversive people are those who ask questions.

When we sense something, it is due to the movement of atoms in space. When I see the moon it is because "moon atoms" penetrate my eye.

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.

...long before the child learns to talk properly-and long before it learns to think philosophically-the world will have become a habit. A pity, if you ask me.