But heroes are always flawed. “Great men are almost always bad men”,’ Lord Acton said immediately after his famous ‘power corrupts’ quote. This is because greatness demands a single-minded desire to win. It does not matter whether it is political, artistic, scientific, business or sporting success that is in question – to become great requires a single-mindedness that will always cause casualties and collateral damage. via Why Lance Armstrong is still a hero | Psychology Today.