The only way of finding the limits of the possible is by going beyond them into the impossible.

Don't stop chasing your dreams, because dreams do come true.

I hated every minute of training, but I said, 'Don't quit. Suffer now and live the rest of your life as a champion'.

A lot of people have gone further than they thought they could because someone else thought they could

If you don't know, the thing to do is not to get scared, but to learn.

I am always doing what I cannot do yet, in order to learn how to do it.

What I stand for is what I stand on.

We cannot direct the wind, but we can adjust the sails.

We could all take a lesson from crayons: some are sharp, some are beautiful, some have weird names, and all are different colors, but they still learn to live in the same box...

Whether you think you can, or you think you can't - you're right.

The best way out is always through.

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

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

Plan your work - work your plan. Lack of system produces that 'I'm swamped' feeling.

Don't wish it were easier, wish you were better.

Dare to live the life you have dreamed for yourself. Go forward and make your dreams come true.

The present is theirs; the future, for which I really worked, is mine.

If we command our wealth, we shall be rich and free. If our wealth commands us, we are poor indeed.

People who say it cannot be done should not interrupt those who are doing it.

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.

My optimism wears heavy boots and is loud.