Hermann Graf Keyserling Professions : Philosopher Born : July 20, 1880 Died : April 26, 1946 Browse All Authors Top 4 quotes by Hermann Graf Keyserling No radical change on the plane of history is possible without crime. Hermann Graf Keyserling radical-change planes crime The majority of great men are the offspring of unhappy marriages. Hermann Graf Keyserling majority unhappy men It is hardly possible to estimate how many marriages fail to prosper or are actually ruined because the man lacks any inkling of the art of love. Hermann Graf Keyserling failing men art The greatest American superstition is belief in facts. Hermann Graf Keyserling superstitions belief facts Similar Authors F. H. Bradley philosopher Irving Copi philosopher Ivan Ilyin philosopher Ivan Illich philosopher Bion of Borysthenes philosopher Bonaventure philosopher All Authors