Language is part of a communication tool, and it is through language that we listen to each other. It is the right and duty of every person to speak, so whoever speaks must be listened to. Not every word that people say should be listened to because there are people who have the habit of saying "bad things". Today's communication values have changed, one of the reasons is the different social networks. Catechesis on the exchange of ideas, with Father Rasendramanana Charles Nirina - SDB.