Power is a poison well known for thousands of years. If only no one were ever to acquire material power over others! But to the human being who has faith in some force that holds dominion over all of us, and who is therefore conscious of his own limitations, power is not necessarily fatal. For those, however, who are unaware of any higher sphere, it is a deadly poison. For them there is no antidote.
Aleksandr SolzhenitsynTo do evil a human being must first of all believe that what he's doing is good, or else that it's a well-considered act in conformity with natural law. Fortunately, it is in the nature of the human being to seek a justification for his actions.
Aleksandr Solzhenitsyn