Myles Burnyeat explains what Aristotle meant by happiness in this latest episode of Philosophy Bites. Surprisingly, Aristotle thought that children couldn't be happy in a meaningful sense and that things that happen without you being aware of them can affect your happiness...
Listen to Myles Burnyeat on Aristotle on Happiness
The book Maieusis, edited by Dominic Scott (see below) is a collection of articles by eminent classics scholars in honour of Myles Burnyeat.