Mikhail Lermontov said this quote

I've an insatiable craving inside me that consumes everything and makes me regard the sufferings and joys of others only in their relationship to me, as food to sustain my spiritual powers. I am no longer capable of loosing my head in love, Ambition has been crushed in me by circumstances, but it has come out in another way, for ambition is nothing but a lust for power and my chief delight is to dominate those around me. To inspire in others love, devotion, fear - isn't that the first symptom and the supreme triumph of power? To cause another person suffering or joy, having no right to do so - isn't that the sweetest food of pride?