Sigmund Freud 1856-1939 Introduction: The Stranger in Your Head (Freudian ideas) Most of us move through the world with a core assumption: that we are rational beings, the masters of our own minds. We believe we make our decisions with logic and free will, consciously charting the course of our lives. We are in control. According to the pioneering neurologist Sigmund Freud, this deeply held belief is one of the greatest lies humanity tells itself. He argued that our conscious