Dr. Sigmund Freud was an Austrian neurologist and the founder of psychoanalysis, a method for treating mental illness and understanding human behavior. Born in 1856, he developed theories about the unconscious mind, dreams, and the importance of childhood experiences in shaping personality. Freud introduced concepts such as the id, ego, and superego, which describe different parts of the human psyche. His work has had a profound impact on psychology, literature, and art, influencing how we think about human motivation and relationships. Freud passed away in 1939, but his ideas continue to be studied and debated today.