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

A ship in harbor is safe. But that’s now what ships are built for.

Do not wait to strike until the iron is hot; but make it hot by striking

I learned not to worry so much about the outcome, but to concentrate on the step I was on and to try to do it as perfectly as I could when I was doing it.

In everything the ends well defined are the secret of durable success.