Think good, and good follows. Think evil, and evil follows. You are what you think all day long.

Thinking is the talking of the soul with itself.

Imagination is more important than knowledge. Knowledge is limited. Imagination encircles the world.

Reality leaves a lot to the imagination.

A clever person solves a problem. A wise person avoids it.

If you can't explain it to a six year old, you don't understand it yourself.

Reality is merely an illusion.

The highest possible stage in moral culture is when we recognise that we ought to control our thoughts.

Once we accept our limits, we go beyond them.