 The Epicureans think that all of our actions are explained by our desire for pleasure, our aversion to pain, and our beliefs about how best to obtain pleasure and avoid pain (Ep. Men 128, Fin. 1.23, 1.30 1.46). People engage in wrongdoing because they have incorrect beliefs about what will bring them pleasure (KD 7, 10, SV 16, Fin. 1.32–33, 1.55). If a person wrongly believes that pursuing great wealth will make them happy, then they will pursue wealth. But this psychological hedonism does not render us helpless, because our beliefs are under our control, and it is reason which gives us this control over our beliefs. We can learn to distinguish which of our desires are for things we really need, and which desires cause us harm, and thereby reject the harmful desires (KD 18–22, 29–30). Using our reason, we can overcome hate, envy, contempt, and other emotions that might lead us to wrongdoing (DL 10.117).