Marriage should be a partnership intended by both parties to last at least as long as the youth of their children, and not regarded by either as at the mercy of temporary amours. If such temporary amours are not tolerated by public opinion or by the consciences of those concerned, each in its turn has to blossom into a marriage. This may easily go so far as completely to destroy the bi-parental family, for if a woman has a fresh husband every two years, and a fresh child by each, the children in effect are deprived of their fathers, and marriage therefore loses its raison d'etre.
Source: Bertrand Russell :Marriage and Morals, 1929
More info.: https://russell-j.com/beginner/MM16-130.HTM