Sigmund Freud is widely recognized as the Father of Psychology. He was an Austrian neurologist and the founder of psychoanalysis, a clinical method for treating psychopathology through dialogue between a patient and a psychoanalyst. Freud's work in the late 19th and early 20th centuries introduced groundbreaking theories about the unconscious mind, defense mechanisms, and the stages of psychosexual development. His ideas have significantly influenced modern psychology, therapy, and the understanding of human behavior, despite criticism and evolution of psychological thought since his time. Freud's legacy continues to spark discussions in both psychological and cultural contexts.