Sigmund Freud is one of the most important thinkers of the twentieth century because his ideas have been used in the culture today. It is unlikely that a person has never heard of or used a Freudian idea such as a Freudian slip or dream analysis. This paper focuses on Freud’s revolutionary theory of psychoanalysis, its origins, and its impact on psychology today. The principles of this theory are fully explained.

Sigmund Freud was born in Freibeg, Moravia on May 6, 1856 or March 6, 1856. There is controversy surrounding the exact date of his birth. His father was a wool merchant and his mother was a lively woman. She was her husband’s second wife, and she was 20 years younger than he was. Freud was the oldest child in the family and his mother, Amalie’s favorite. He always thought that the strong relationship between him and his mother had a lot to do with his success. When Sigmund was four he and his family moved to Vienna when he lived most of his life (Breger, 2000).

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