'Obscene discourse is revolting to all who are not yet dead to modesty and shame, but many disguise their obscenity under ambiguous expressions, so as to draw such percons into the conversation: but is their crime any the less be cause of its being glossed over?
No, it generally happens that the danger is much greater because of the evil being disguised.
Christian purity ought to shrink from all conversation, let it be ever so artificially varnished, that tends to make impure subjects or objects pleasing: it is, therefore, necessary to avoid with extreme care in conversation all that might, even indirectly, infringe on modesty. If any thing be uttered contrary to purity, a Christian ought not to listen, if he would preserve his heart from corruption: nothing is indifferent, where all is in danger: every sense, should, therefore, be on the alert to prevent the approach of the enemy.’
St. Jean Baptiste de la Salle
'‘THERE are some men who in their discourse make a parade of irreligion and incredulity: the very word of God is not safe from their raillery, for they will sometimes pervert its meaning in the most scandalous manner, even giving to its texts an obscene interpretation. The company of such men must be carefully shunned, for evil communication corrupts good manners, and it may be added when speaking of these false Christians, in the words of the Wise Man, that their discourse is so much the more detestable, in that they make of sin a play and an amusement. It is not only necessary to avoid swearing, blasphemy, imprecations, insulting expressions, but even the companionship of those who are addicted to these vices. There are other terms, which, of themselves, signify nothing, yet are to be care fully excluded from the conversation of a Christian, such as the too frequent mention of the holy name of God without proper reverence, or any necessity for introducing it. The respect which every Christian ought to have for the Lord, is incompatible with these liberties of speech, which often degenerates into indifference and irreverence, and finally becomes a sacrilegious and blasphemous habit.’
St. Jean Baptiste de la Salle