Karl Mannheim ( March 27 , 1893 -- January 9 , 1947 ) , or Károly Mannheim in the original writing of his name , was a Hungarian-born sociologist , influential in the first half of the 20th century and one of the founding fathers of classical sociology as well as a founder of the sociology of knowledge .
Karl Mannheim ( 27 March 1893 - 9 January 1947 ) , or Károly Mannheim in original writing of his name , was a Hungarian-German sociologist and social scientist . He was influential in the first half of the 20th century .