By Louis Levine, Ph. D. (1913, January 26). THE PHILOSOPHY OF HENRY BERGSON AND SYNDICALISM :The Forthcoming Lectures of the Noted French Professor at Columbia Make of Especial Interest This Comparison of His Theories with Those of Such Writers as George Sorel.. New York Times (1857-Current file),SM4.  Retrieved April 26, 2008, from ProQuest Historical Newspapers The New York Times (1851 - 2004) database. (Document ID: 100250821).