To recognize that the greatest error is not to have tried and failed, but that in trying, we did not give it our best effort
Failure is not an option!
Failiure is not an option.
I don't care what anything was designed to do, I care about what it can do.
We've never lost an American in space, we're sure as hell not gonna lose one on my watch! Failure is not an option.
You can not operate in this room unless you believe that you are Superman, and whatever happens, you're capable of solving the problem.