If you’re a Harry Potter fan, you probably remember the moment Sirius Black dropped a truth bomb in ‘Goblet of Fire’ that had nothing to do with spells and everything to do with character. Sirius said, as JK Rowling wrote, “If you want to know what a man’s like, take a good look at how he treats his inferiors, not his equals.”It’s one of those lines that sticks with you because it’s so blindingly accurate. In the wizarding world, Sirius was talking about how people treated house-elves. In our world? It’s the ultimate mantra to check in dating, friendships, and even the workplace.