How does a place take the mantle of ‘leader in art’ from another place? In the case of the takeover of New York from Paris toward the end of the 1930s, the mantra seems to have been “know more, paint better”. Of course the Nazi occupation of Paris (and the consequent repressed guilt of the Parisian intellectuals who collaborated, as many did) may have helped matters along somewhat between 1939 and 1950.