I don't think necessity is the mother of invention. Invention ... arises directly from idleness, possibly also from laziness. To save oneself trouble.

To be yourself in a world that is constantly trying to make you something else is the greatest accomplishment.

You lose nothing when fighting for a cause ... In my mind the losers are those who don't have a cause they care about.

Our patience will achieve more than our force.

Lack of direction, not lack of time, is the problem. We all have twenty-four hour days.

Everything you want is out there waiting for you to ask. Everything you want also wants you. But you have to take action to get it.

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.

A hero is no braver than an ordinary man, but he is brave five minutes longer.

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

United we stand; divided we fall.

Determine never to be idle. No person will have occasion to complain of the want of time, who never loses any. It is wonderful how much may be done, if we are always doing.

Believe you can and you're halfway there.

Neither seek nor avoid, take what comes.

You'll never do a whole lot unless you're brave enough to try.

Yesterday is gone. Tomorrow has not yet come. We have only today. Let us begin.

They deem me mad because I will not sell my days for gold; and I deem them mad because they think my days have a price.

If you want creative workers, give them enough time to play.

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

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

Stand up to your obstacles and do something about them. You will find that they haven't half the strength you think they have.

Don't fear failure. Not failure, but low aim, is the crime. In great attempts it is glorious even to fail.