The first requisite of success is the ability to apply your physical and mental energies to one problem without growing weary.

Direct thought is not an attribute of feminity. In this, women are now centuries behind man.

If we did all the things we are capable of doing, we would literally astound ourselves.

I have not failed. I have successfully discovered 1200 ideas that don't work.

I have not failed 700 times. I have not failed once. I have succeeded in proving that those 700 ways will not work. When I have eliminated the ways that will not work, I will find the way that will work.

Let the public throw bouquets to the inventors and in time we will all be happy.

Do the thing and the power will come.