Judging

"For a true measure of someone's character, look not to how they act towards friends, but to how they act towards those they dislike."

Honestly, I find that one better than all 62 quotes I've posted recently - self-created and otherwise. Of course, this requires you to judge the person... But if you've ever thought about it - everyone judges everyone. They have to. The thing is - you don't have to act on your opinions. If you think someone is a bad person, you can act just as generous and kind to them as you would anyone else, and they'd never know what you thought. That's what people like - they don't actually believe you don't judge them. They know you won't treat them any different no matter what you think. It makes people friendlier - it makes them feel safe. And well it should - they'll know for sure you don't mean them any harm - physical, mental, or emotional.