What can Aristotle teach us about the routes to happiness?
In the Western world, only since the mid-18th century has it been possible to discuss ethical questions publicly without referring to Christianity. Modern thinking about morality, which assumes that gods do not exist, or at least do not intervene, is in its infancy. But the ancient Greeks and Romans elaborated robust philosophical schools of ethical thought for more than a millennium, from the first professed agnostics such as Protagoras (fifth century BCE) to the last pagan thinkers. The Platonists’ Academy at Athens was not finally closed down until 529 CE, by the Emperor Justinian.