But once he started to question the Marxist dogma, Kolakowski did not stop until he left the movement altogether to become one of its most important critics and opponents. I remember being present, as a young student in Warsaw, at an illegal meeting at the university to commemorate the 10th anniversary of the reform movements of 1956 – the meeting at which Kolakowski severed his last, by then fragile, links with the official world of the Communist Party.