This volume contains the definitive version of the second of the five volumes of Benjamin Constant's major study entitled "De la Religion, considérée dans sa source ...". Its unusually extensive annexes assemble a selection of manuscripts illustrating the working methods and strategies employed by the author. Further, the volume contains a general introduction, a chronology and a detailed critical apparatus comprising explanatory notes, biographical details of the persons referred to, a bibliography, and an index of proper names. As such it gives a graphic idea of the astounding originality displayed by Constant in his approach to research on religion.