Cat, why do people lie?

So I don't think we need to trust people's words that much. Most people sometimes (or even often) don't mean and don't understand what they are saying. Set yourself to just listen to them in a purpose of respecting them. Afterward, you may see whether what they've said comes true or not. Never let yourself be disappointed by your own expectation toward something you shouldn't expect to. You should know somehow that to trust people is to make a fool of yourself. Remember that people lie