Vlastos, Gregory (1907–91)
A leading figure in the study of ancient Greek philosophy, Vlastos was a pioneer in the application to ancient philosophers of the techniques of analytic philosophy. Concentrating on figures of early Greek philosophy, he made major contributions to the understanding of the Presocratics, Socrates and Plato. He saw the Presocratics as applying ethical concepts to nature which ultimately rendered nature intelligible. He distinguished between the early dialogues of Plato, which represent the philosophy of Plato’s master Socrates – a philosophy the early Plato shared – and the middle dialogues in which Plato develops a transcendental metaphysics and rationalist epistemology to ground Socratic ethical concepts. Vlastos’s work played a major role in bringing the history of philosophy into the mainstream of philosophical research.