Walt Disney
Somehow I can't believe that there are any heights that can't be scaled by a man who knows the secret of making dreams come true. This special secret, it seems to me, can be summarized in four c's. They are curiosity, confidence, courage, and constancy, and the greatest of these is confidence. When you believe in a thing, believe in it all the way, implicitly and unquestionably.
Robert F. Kennedy
Few will have the greatness to bend history itself, but each of us can work to change a small portion of events... It is from numberless acts of courage and belief that human history is shaped.