We haven't failed. We now know a thousand things that won't work, so we are much closer to finding what will.

The first requisite for success is to develop the ability to focus and apply your mental and physical energies to the problem at hand - without growing weary. Because such thinking is often difficult, there seems to be no limit to which some people will go to avoid the effort and labor that is associated with it.

I'll try anything...I'll even try Limburger cheese!

People are not remembered by how few times they fail, but by how often they succeed. Every wrong step is another step forward

The endeavor to change universal power by selfish supplication I do not believe in.

Success is the product of the severest kind of mental and physical application.

An average American loves his family. If he has any love left over for some other person, he generally selects Mark Twain.