Dr. Sigmund Freud (1856–1939) was an Austrian neurologist and the founder of psychoanalysis. Renowned for his groundbreaking theories on the human mind, Freud explored concepts such as the unconscious, repression, and the role of sexuality in human behavior. His influential works include "The Interpretation of Dreams," "Civilization and Its Discontents," and "The Psychopathology of Everyday Life." Freud's impact extends beyond the field of psychology, influencing literature, art, and cultural thought. While some of his ideas have been controversial and evolved over time, Freud remains a key figure in the history of psychology and the understanding of the human psyche.