Sigmund Freud delivers five lectures about the “historical survey of the origin and further development of this new method and cure.” He called this method psychoanalysis. In 1909, when he was 53, he was invited by Clark University and delivered these lectures—the first ones he delivered in the United States. In 1910 they were published in the Origin and Development of Psycho-Analysis. Freud himself explains his beliefs of the sexual drive present in infants, the examination of dreams and bungling acts, the resistance of the unconscious that influences everyday thoughts and actions, and the importance of transference in therapy.