“.It is asking a great deal of a man, who has learnt to regulate his everyday affairs in accordance with the rules of experience and with due regard to reality, that he should entrust precisely what affects him most nearly to the care of an authority which claims as its prerogative freedom from all the rules of rational thought.”

Austrian physician and psychoanalyst of the late 19th and early 20th centuries, Freud is best known for founding psychoanalysis and exploring the unconscious mind through techniques like free association. His theories on the structure of personality—id, ego, and superego—and the role of early childhood experiences in shaping behavior remain foundational in psychology.