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

Don't find fault, find a remedy.

Coming together is a beginning keeping together is progress working together is success.

When everything seems to be going against you, remember that the aeroplane takes off against the wind, not with it.

Failure is the opportunity to begin again more intelligently.

Obstacles are those frightful things you see when you take your eyes off your goals.

If money is your hope for independence you will never have it. The only real security that a man will have in this world is a reserve of knowledge, experience, and ability.

When everything seems to be going against you, remember that the airplane takes off against the wind, not with it.

Coming together is a beginning; keeping together is progress; working together is success.

Anyone who stops learning is old, whether at twenty or eighty. Anyone who keeps learning stays young. The greatest thing in life is to keep your mind young.

Quality means doing it right when no one is looking.

The last madness I’ll probably persist in is to believe myself a poet: it will be up to the critics to cure me.

Neither words can bring you back... I know now, as I have triedNot the tears... I know now, as I have cried

I feel very open with people, and I'm good at disarming them and having conversations.

Social Science … led us to the fallacy that, since all men have their being in culture and as a result of culture, they owe a debt to that culture which even a lifetime of altruism could not repay.

A vice utterly at variance with the happiness of him who harbors it, and, as such, condemned by self-love.

Don't worry about people stealing your design work. Worry about the day they stop.

If we focus on the minuses, we go down the spiral. But if we are able to focus on the pluses, we can become stronger and put more meaning into our life.

Black holes. I don't know what people see in them. Exit signs? They're on their way out.

Oh, I'm not a percussionist, I just like to hit things.

Having three operational vehicles in the fleet affords the shuttle program great schedule flexibility as we move toward flying safely and completing the international space station.