Freud may justly be called the most influential intellectual legislator of his age. His creation of psychoanalysis was at once a theory of the human psyche, a therapy for the relief of its ills, and an optic for the interpretation of culture and society. Despite repeated criticisms, attempted refutations, and qualifications of Freud’s work, its spell remained powerful well after his death and in fields far removed from psychology as it is narrowly defined.
http://freudquotes.blogspot.co.uk/2015/05/happy-birthday-freud.html?m=1