The only path by which another person can upset you is through your own thought.

Thinking is the talking of the soul with itself.

A man is but the product of his thoughts. What he thinks he becomes.

Reality leaves a lot to the imagination.

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

Insanity is doing the same thing over and over again and expecting different results.

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

Once we accept our limits, we go beyond them.

Why does the eye see a thing more clearly in dreams than the imagination when awake?