Quote: “Power corrupts; absolute power corrupts absolutely.” What he actually said: “Power tends to corrupt; absolute power corrupts absolutely. Great men are almost always bad men.” The subtle difference between the misquote and actual quote is akin to the difference between kinetic energy and potential energy. In the misquote, it’s implied that all power corrupts. In the real quote, it states that power has the potential to corrupt, but not automatically.
(http://phrases.org.uk/meanings/absolute-power-corrupts-absolutely.html) "Power tends to corrupt, and absolute power corrupts absolutely. Great men are almost always bad men." Great examples of this are Golding's Lord of the Flies and world history. I also love "Operation Stingray" posted in /r/nosleep (http://www.reddit.com/r/nosleep/comments/1sxtd1/operation_stingray_is_in_effect_god_help_us/).