The Gifford Lectures delivered by Gregory Vlastos in 1981 at the University of St Andrews under the title ‘The Philosophy of Socrates’ have never been published in their original form. Many of the chapters in Vlastos’s landmark Socrates: Ironist and Moral Philosopher (1991) and the posthumous collection Socratic Studies (1993) began their life as Gifford lectures, but were subsequently revised. But while we do not have the Vlastos’s Giffords in their original form, we can reasonably claim to have their argument.