The genius who sought biological proof of a soul's existence ...

René Descartes once described the pineal gland as “the principal seat of the soul.” Medical knowledge has vastly progressed since his time, though. Here’s what we know about this critical ...

He leaves the arguments of the medieval church and renaissance thinkers behind and steps into the world of enlightenment philosophy, as heralded by Rene Descartes. Adrian tells us that Descartes ...