We delight in the beauty of the butterfly, but rarely admit the changes it has gone through to achieve that beauty.

If you want a thing done well, do it yourself.

Don't just read the easy stuff. You may be entertained by it, but you will never grow from it.

Know thyself.

I invented my life by taking for granted that everything I did not like would have an opposite, which I would like.

My heroes are the ones who survived doing it wrong, who made mistakes, but recovered from them.

The fact that the great scientist believed in flying machines was the one thing that encouraged us to begin our studies.

If the only tool you have is a hammer, you tend to see every problem as a nail.

The key to immortality is first living a life worth remembering.

I just want to be able to play and make people feel good with what I do. When you're thinking that way, anything can happen. And, usually, what happens is good.

Yelling at living things does tend to kill the spirit in them. Sticks and stones may break our bones, but words will break our hearts...

If we go down into ourselves, we find that we possess exactly what we desire.

The more you lose yourself in something bigger than yourself, the more energy you will have.

You don't need a weather man to know which way the wind blows

Wanting to be someone else is a waste of who you are

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young.

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

Life is 10 percent what happens to you and ninety percent how you respond to it.

Climbing to the top demands strength, whether it is to the top of Mount Everest or to the top of your career.

I have always found that mercy bears richer fruits than strict justice.

Life isn't about finding yourself. Life is about creating yourself.