Everything you can imagine is real.

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

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

Change your thoughts, and you change your destiny.

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.

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

Only a life lived for others is a life worthwhile.

Once we accept our limits, we go beyond them.