A conference on Scholars in Exile and Dictqatorships of the 20th Century took place at National Technical Museum in Prague from May 24-26, 2011 exhibited the debilitating brain drain that a resulted from the 1918 Russian Revolution, the Nazi era and post-war communist oppression. The story is grim, though not entirely negative, since significant intellectual consequences of the upheaval also occurred during those periods. and Antonín Kostlán.