[2][3] Raised in the Catholic faith, he moved away from it to become a radical secular and anticlerical militant.
[4] He left his professional career and from 1926 he devoted himself entirely to La Libre-pensée, where he eventually became general secretary while at the same time being in charge of the association's publications, in particular La Raison ("Reason"), and L'Idée libre ("The Free Idea").
However, a little later he joined the SFIO, French Section of the Workers' International, and in 1938 became a defender of the Munich Agreement.
In 1956, together with André Lorulot, he founded "La Raison", "organ of secular action and rationalist propaganda".
[6] In 1975 he left his directing role in La Libre pensée, but he was still named as the Honorary President.