Do not think of todays failures, but of the success that may come tomorrow.

I'm decrepit but I don't want to give up, and I love my work.

The world is moved not only by the mighty shoves of the heroes, but also by the aggregate of the tiny pushes of each honest worker.

No pessimist ever discovered the secrets of the stars, or sailed to an uncharted land, or opened a new heaven to the human spirit.

Every modern war has had its root in exploitation

As I went more and more about the country I learned that I had spoken with assurance on a subject I knew little about.