Gypsy, he didn't clarify his point, rather he was defending his wife, anyone would do that.
The whole point is, a wife cannot be compared to a prostitute. Prostitution is just limited to the sexual pleasure, where as marriage is a big responsibility, a wife has alot of responsibilities towards the husband and vice versa. Alot of compromise and sacrifice is needed to run a marriage.
And he has a point that at least prostitutes get paid "liberally speaking".

Una palabra no dice nada, Y al mismo tiempo, Lo esconde todo