The expert in anything was once a beginner.

Wish not so much to live long as to live well.

I cannot give you the formula for success, but I can give you the formula for failure—which is: try to please everybody.

Never help a child with a task at which he feels he can succeed.

We've all got both light and dark inside us. What matters is the part we choose to act on. That's who we really are.

The wisest mind has something yet to learn.