Science is organized knowledge. Wisdom is organized life.

The limits of my language mean the limits of my world.

The mind is its own place, and in itself can make a heaven of hell, a hell of heaven.

The only true wisdom is in knowing you know nothing.

The only way to deal with an unfree world is to become so absolutely free that your very existence is an act of rebellion.

Happiness is the meaning and the purpose of life, the whole aim and end of human existence.