Wilfred Ruprecht Bion DSO (8 September 1897 – 8 November 1979) was an influential British psychoanalyst, who became president of the British Psychoanalytical Society from 1962 to 1965. Bion has been twinned with Jacques Lacan as "inspired bizarre analysts...who demand not that their patients get better but that they pursue Truth". 'Bion's ideas are highly unique', so that he 'remained larger than life to almost all who encountered him'. He has been considered by Neville Symington as possibly "the greatest psychoanalytic thinker...after Freud".