Epicureanism
The chapter argues that ancient Epicureanism (mainly Epicurus, Lucretius, and Philodemus) is plausibly interpreted as a self-cultivation philosophy. The existential starting point is a life of irrational fears and frustrated desires. The ideal state of well-being is a life of pleasure, understood primarily as the absence of physical pain and mental distress (more tranquilism than hedonism). This ideal life is free of fear of death and the gods, and it is devoted to friendship, moral virtue, and the pursuit of desires only if they are natural and necessary. The philosophical foundation is a materialist, atomistic theory of nature and human nature that entails that death is nothing to fear, the gods are unconcerned with us, and only natural and necessary desires are important. We achieve this ideal through spiritual exercises that involve learning Epicurean philosophy, modifying desires, and cultivating virtue in a community of like-minded people.