Believe and act as if it were impossible to fail.

A research problem is not solved by apparatus; it is solved in a man's head.

I could do nothing without my problems; they toughen my mind. In fact, I tell my assistants not to bring me their successes for they weaken me, but rather to bring me their problems, for they strengthen me.

Every time you tear a leaf off a calendar, you present a new place for new ideas and progress.

I am not interested in the past. I am interested in the future, for that is where I expect to spend the rest of my life.

One fails forward toward success.

You can send a message around the world in one-fifth of a second, yet it may take years for it to get from the outside of a man's head to the inside.