My research focuses primarily on ancient philosophy of mind: how the soul is related to the body, whether it has any distinctive causal power of its own, and how its states can represent the world or have content. I have looked at these issues especially in the Aristotelian tradition; but my long term research has been directed at the last question, concerning content, throughout the whole of Greek philosophy, from Parmenides and the sophist Gorgias, through Plato and Aristotle, to Hellenistic philosophers like the Stoics and beyond, to early medieval philosophers such as Augustine.
He postulated that, at birth, the mind was a blank slate, or tabula rasa. Contrary to Cartesian philosophy based on pre-existing concepts, he maintained that we are born without innate ideas, and that knowledge is instead determined only by experience derived from sense perception, a concept now known as empiricism. 2b1af7f3a8