Georg Wilhelm Friedrich Hegel (1770-1831) is widely regarded as the most influential philosopher of the 19th century. Indeed many consider him one of the greatest of all modern thinkers. Yet he was not without his detractors: Arthur Schopenhauer, his contemporary, called him a "vulgar, dull, repulsive, witless charlatan." Karl Popper accused him of being an "enemy" of "the open society." Hegel's ideas have been blamed for everything from Nazism to Communism.
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