Athens, 2,400 years ago: it’s a compact place, only about a quarter of a million people live here. There are fine baths, theatres, temples, shopping arcades and gymnasiums. It’s warm for more than half the year. This is also home to the world’s first true, and probably greatest, philosopher, Plato. Born into a prominent and wealthy family in the city, Plato devoted his life to one goal: helping people to reach a state of what he termed, eudaimonia or fulfilment.