One could argue that most progress, in many fields of endeavor, has come about because of rivalry. Whether in science, art, or sports, recognition or competition to be first or best has been the driving force for many people. In addition, these people of accomplishment have led lives that one would not consider, in the words of George Bernard Shaw, reasonable.“The reasonable man adapts himself to the world; the unreasonable one persists in trying to adapt the world to himself. Therefore, all progress depends on the unreasonable man.” - George Bernard Shaw