Bad guys don't think they're bad guys. Hitler probably thought he was a wonderful guy doing some wonderful and righteous work for Germany.
“Just don't give up trying to do what you really want to do. Where there is love and inspiration, I don't think you can go wrong.”
“Be Prepared... the meaning of the motto is that a scout must prepare himself by previous thinking out and practicing how to act on any accident or emergency so that he is never taken by surprise.”