George Bernard Shaw once wrote, "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."

People who have the audacity to do big things are frequently not reasonable people at all, and many times can be quite wacky. Sometimes this turns out well, like with Isaac Newton and Nikola Tesla. Other times this turns out very badly, like with Josef Stalin or Adolf Hitler.