"Francis Bacon long ago called attention to the play of predispositions or prejudices in man's life when he wrote of four "Idols," or types of false opinion, that man must avoid if he wishes to attain sound judgements. ...1. The idols of the tribe are those false opinions which, by the very nature of man himself, are likely to distort and discolor his judgements. Bacon recognized "the mind" as an active agent that tended to project its own whims and desires into its surroundings... therefore... man, collectively speaking, tends to be anthropocentric or "man-centered" in his investigations of nature. 2. The idols of the cave are those errors which the individual makes in consequence of his peculiar or personal temperament and background. Each individual has been inevitably, if not unduly, influenced by certain traditions, authorities, and the like which have been especially admired in the particular "cave" or locality where his values came about as a reflection of what his associates valued. 3. The idols of the market place are those errors which arise as a result of the ways we confuse one another, especially through the nonrigorous and vague or ambiguous use of language. Bacon recognized that language does not necessarily reflect either the content or the structure of reality, that it is quite possible to create "names" for nonexistent things. Men may think that reason governs the use of words; but in reality it is often words which govern reason. 4. The idols of the theater are those errors or false opinions imbedded in an uncritically accepted tradition. Thus, pride of race, exaggerated nationalism, or perverted patriotism may become the essential traditions of a culture; and in some communities children grow up in a climate of social snobbery, narrow sectarianism in religion, and strict partisanism in politics. Bacon believed that "the power of reason" gave man the ability to rise above prejudice."