6.  Let husbands listen as well:  here is a lesson for them.  The viper vomits forth its venom in respect for marriage; and you, will you not put aside the barbarity and the inhumanity of your soul, out of respect for your union?  Perhaps the example of the viper contains another meaning.  The union of the viper and of the lamprey is an adulterous violation of nature.  You, who are plotting against other men’s wedlock, learn what creeping creature you are like.  I have only one object, to make all I say turn to the edification of the Church.  Let then libertines put a restraint on their passions, for they are taught by the examples set by creatures of earth and sea.