We all want to write amazing dialogue, but it can be deceptively difficult. The rub is that few people actually say what they mean. Society, religion and class all put constraints on our desires, creating fear and shame that forces us to sensor our words. For the most part, that’s a good thing because it helps maintain the stability of society. But if you want to write complicated characters, you need to understand the juxtaposition of what they are saying versus what they mean. This is called subtext.