[[Pasteur]] criticized [[positivism|positivist]] [[Auguste Comte]] that his fundamental principle is to dismiss any metaphysical search for first and final causes and to [[reductionism|reduce]] all ideas and all [[theory|theories]] to facts, and to attribute the character of certainty only to demonstrations of experience. Conversely, instead of achieving for scientific rigour, this approach turned out to be an utopia and led Comte to end up with the lack of precision and clarity in stating his doctrine, with doubtful assertions, obscure precepts, and anecdotal examples.<ref name="Debré">{{cite book |title=Louis Pasteur|author=Patrice Debré|publisher=The Johns Hopkins University Press|place=Baltimore and London|year=1998|pages=365-368|isbn=978-0801-865299|url=http://books.google.com/books?id=RzOcl-FLw30C&printsec=frontcover&dq=Patrice+Debre+Louis+Pasteur&hl=sk&sa=X&ei=WpSvUvLLLYXYtAbtwICgBw&redir_esc=y#v=onepage&q=Tiger&f=false|quote=}}</ref> | [[Pasteur]] criticized [[positivism|positivist]] [[Auguste Comte]] that his fundamental principle is to dismiss any metaphysical search for first and final causes and to [[reductionism|reduce]] all ideas and all [[theory|theories]] to facts, and to attribute the character of certainty only to demonstrations of experience. Conversely, instead of achieving for scientific rigour, this approach turned out to be an utopia and led Comte to end up with the lack of precision and clarity in stating his doctrine, with doubtful assertions, obscure precepts, and anecdotal examples.<ref name="Debré">{{cite book |title=Louis Pasteur|author=Patrice Debré|publisher=The Johns Hopkins University Press|place=Baltimore and London|year=1998|pages=365-368|isbn=978-0801-865299|url=http://books.google.com/books?id=RzOcl-FLw30C&printsec=frontcover&dq=Patrice+Debre+Louis+Pasteur&hl=sk&sa=X&ei=WpSvUvLLLYXYtAbtwICgBw&redir_esc=y#v=onepage&q=Tiger&f=false|quote=}}</ref> |