Sigmund Freud is far and away the most famous psychologist in history. While there are many impressive names that join his as being legends of psychology none seem to be able to quite match his stature. Here are the reasons why Sigmund Freud is considered to be the most famous psychologist in history. The Unconscious Mind One of Freud’s greatest contributions to psychology was his theory of the unconscious mind. Today the fact that there are many unconscious thoughts and beliefs motivating the behavior of humans is taken for granted but it was Freud who first presented this idea. It was he who pioneered psychoanalysis as a means of focusing…