1902-1994 1913-2007 1924 1924- 193 193b 20thcentury 501 artists biography cataloguesraisonnésdoucet cobra(association) feyerabend france history imre intellectuals irrationalism(philosophy) jacques kuhn lakatos lucebert measurement methodology paul paulk philosophers philosophy popper q175 q175s889p1982 rationalism religionandscience science skepticism theology thomass torrance