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 According to Aristotle - "Philosophy is a science which discovers the real nature of supernatural elements". According to Levison - "Philosophy is mental activity". According to Karl Marks - "Philosophy is the interpretation of the world in order to change it". According to Hegel - "Philosophy is that which grasps its won era in thought." Kant Immanuel Regards philosophy as "the science and criticism of cognition." According to Russel - "Philosophy proper deals with matters of interest to the general educated public, and loses much of its value if only a few professionals can understand it." According to Henderson - "Philosophy is a rigorous, disciplined, guarded analysis of some of the most difficult problems which men have ever faced." According to John Dewey - "Philosophy is not a panacea (remedy for all kinds of diseases/troubles) for the problems of men, but is that which emerges out of the methods