Fifty Years of Freedom: A Study of the Development of the Ideas of A. S. Neill is a 1972 intellectual biography of the British pedagogue A. S. Neill by Ray Hemmings. It traces how Homer Lane, Wilhelm Reich, Sigmund Freud and others influenced Neill as he developed the "Summerhill idea", the philosophy of child autonomy behind his Summerhill School. The book follows Neill's early life and career in rural, Calvinist Scotland and continues through the influence of his mentors, Lane and Reich, and the origins of Summerhill after World War I. Written fifty years from Summerhill's founding, Fifty Years is a sociological and historical analysis of Neill's ideas in the context of intellectual and educational trends both during Neill's life and at the time of publication. Hemmings also surveyed pro