• Henri Bergson ([1932] 1937). Les Deux Sources de la morale et de la religion, ch. I, pp. 1-103 & Les Deux Sources de la morale et de la religion ch. IV, pp. 287–343. Félix Alcan.
• Translated as ([1935] 1977), The Two Sources of Morality and Religion (with left or right arrow buttons of this link to locate succeeding pages), pp. 18-27, 45-65, 229-34., trs., R. A. Audra and C. Brereton, with the assistance of W. H. Carter. [Macmillan] Notre Dame.
Henri Bergson, The Two Sources of Morality and Religion, pp. 20-21. 1935, Macmillan.