What are we really doing when we throw away our innate faithfulness, to intrigue with our neighbour's wife? We are ruining and destroying – well, what? How about the man of trust, principle and piety that once was? And is that all? Aren't we also ruining the idea of neighbourliness, friendship and community? What position are we putting ourselves in? How am I supposed to deal with you now? As a neighbour? A friend? Some friend! A fellow citizen? But how can a fellow citizen like you be trusted?

Epictetus

Discourses II, 4.2-3