Book excerpt: "What Have the Greeks Done for Modern Civilisation?" by J. P. Mahaffy is a thoughtful look at one of the most important ancient civilizations through the eyes of this Irish scholar. This text is the written from of a lecture given that delves into different Greek contributions to society. From the arts like poetry, prose, painting, and music, to more technical matters like architecture, grammar, science, math, sociology, and law. Indeed, Mahaffy shows how much of tody's world is owed to the Greek.