
The Catholic Church, on the ground that marriage is a sacrament, does not allow divorce for any purpose whatsoever, but in practice this severity is somewhat mitigated - especially where the great ones of the earth are concerned - by the fact that there are many grounds for nullity. ... In France, anti-clericalism produces easy divorce.
Source: Bertrand Russell :Marriage and Morals, 1929
More info.: https://russell-j.com/beginner/MM16-010.HTM