"People who live in glass houses should not throw stones." Tweet This! Don't criticize other people if you're not perfect yourself. "Hope for the best, but prepare for the worst." Tweet This! Bad things might happen, so be prepared. "Better late than never." Tweet This! It's best to do something on time. But if you can't do it on time, do it late. "Birds of a feather flock together." Tweet This! People like to spend time with others who are similar to them. "Keep your friends close and your enemies closer." Tweet This! If you have an enemy, pretend to be friends with them instead of openly fighting with them. That way you can watch them carefully and figure out what they're planning.