The marriage, which was probably bigamous, broke up soon after. Later he married twice more. He settled in Paris, becoming a naturalised French citizen. He studied law at the Sorbonne, and claimed to have got a doctorate there in 1925: he was known widely as 'Dr. Alekhine'. Researchers have failed to find any trace of this in the records of the Sorbonne. Having at last won the world title, Alekhine used every device to avoid giving Capablanca a return match. He remarked to a friend "Somehow the match will never take place".