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

Hating people because of their color is wrong. And it doesn't matter which color does the hating. It's just plain wrong.

I seldom end up where I wanted to go, but almost always end up where I need to be.

All thinking men are atheists.

Good thoughts bear good fruit, bad thoughts bear bad fruit.

My advice to other disabled people would be, concentrate on things your disability doesn't prevent you doing well, and don't regret the things it interferes with. Don't be disabled in spirit as well as physically.

Believe you can and you're halfway there.

Listen to many, speak to a few.

Ability is what you're capable of doing. Motivation determines what you do. Attitude determines how well you do it.

To succeed in your mission, you must have single-minded devotion to your goal.

Do not worry about holding high position; worry rather about playing your proper role.

Look up at the stars and not down at your feet. Try to make sense of what you see, and wonder about what makes the universe exist. Be curious.

Our greatest glory is not in never falling but in rising every time we fall.

The crisis of today is the joke of tomorrow.

Everything I've ever done was out of fear of being mediocre.

People don't realize how a man's whole life can be changed by one book.

You can't live a perfect day until you do something for someone who will never be able to repay you.

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

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

A pure hand needs no glove to cover it.

I'd rather be hated for who I am, than loved for who I am not.