With Louis Auguste Sabatier (1839–1921), he was originator of the French "Symbolo-Fideism" movement, a theological concept that was a union of symbolism and fideism. In his lectures and writings Ménégoz stressed that salvation was achieved through the act of faith independent of creed. A few of his more important publications were:
L'autorité de Dieu, réflexions sur l'autorité en matière de foi (1892).
La notion biblique du miracle (1894).
Étude sur le dogmas de la Trinité (1898).
Publications diverses sur le fidéisme et son application à l'enseignement chrétien traditionnel, 5 volumes (1900–21).