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.
“That was my dream, to drive for Ferrari, but I am not a kid any more. If Ferrari is the best team and if I get the chance to drive for Ferrari, it would be with pleasure.”
“The diversity of the phenomena of nature is so great, and the treasures hidden in the heavens so rich, precisely in order that the human mind shall never be lacking in fresh nourishment.”