At home I am a nice guy: but I don't want the world to know. Humble people, I've found, don't get very far.
It evolved from my experience in the fifties, growing up during the McCarthy era, and hearing a lot of assumptions that America was wonderful and Communism was terrible.
A wonderful emotion to get things moving when one is stuck is anger. It was anger more than anything else that had set me off, roused me into productivity and creativity.