Donald Trump has made no secret of his deep and abiding belief in vengeance as a philosophical principle. From his earliest days as a celebrity businessman in New York, Trump has made it clear that if he believes someone has wronged him he must retaliate. In "Think Big," his 2009 book of business advice, he spells it out:
I love getting even when I get screwed by someone. ... Always get even. When you are in business you need to get even with people who screw you. You need to screw them back 15 times harder. You do it not only to get the person who messed with you but also to show the others who are watching what will happen to them if they mess with you. If someone attacks you, do not hesitate. Go for the jugular.
