Unless you are locked in a dungeon, you have opportunities to do good and evil things. There is nobody so poor that he cannot act charitably. If your response to every situation in which you can show charity or mercy is "one day when I get rich", and then you get rich, you probably still won't be any more charitable. You were stingy with your time/money when you were poor, and you will be the same when you are rich. If you would happily kill a man for personal advancement, you'd lie about a man for personal advancement. You can think you'd hurt people if given the right chance, but you've had plenty of chances to hurt people and benefit. What did you do in those situations?