 As a political theorist, moral philosopher and polemicist, she is unmatched in both range and rigor.In 1998 Walter Laqueur stated "No twentieth-century philosopher and political thinker has at the present time as wide an echo", as philosopher, historian, sociologist and also journalist.In popular imagination she is known primarily for the reaction to her work on Adolf Eichmann, and in particular for the one phrase "the banality of evil".