The first volume of Foucault's history of sexuality is titled as the introduction. Arguably, this 'introduction' contains the crux of his entire study. Inside, he elaborates a philosophy of power/knowledge and its relation to the changing forms 'sexuality' has taken in the West since the late middle ages in Europe. He also sets out to debunk what he calls 'the repressive hypothesis.' The second and third volumes are about ancient Greece and Rome, in that order.