Task: Text Categorization
Input (English): Some of this man's philosophical positions have only been found in his Commonplace Book, which was published posthumously, while other books by this philosopher include an omnibus Some Main Problems of Philosophy. He attacked George Berkely's concept of esse es percipi in a work entitled "The Refutation of Idealism. " This person argued that "objects of mental acts and perception have an existence wholly independent of a person's mind" in his dissertation, which was published as "The Nature of Judgement. " In his most famous work, this sometime editor of Mind argued against what he termed the "naturalistic fallacy" and claimed that its central concept was a non-natural, unanalyzable concept. For ten points, identify this man who advocated a common sense approach and utilized it to analyze the concept of good in his Principia Ethica. 
Output (English): Social Science