Above all, Pope Francis recalled Jesus' teaching: a tree is known by its fruit (Lk. 6:44) "A good person brings out what is good in his heart, but an evil person brings out what is evil from his heart, and what is in his heart, his mouth pours out." So, if you want to have a good relationship, you have to purify the heart. Catechesis on the World Day for Social Communication, in collaboration with Fr. Marcel Ranivomanalina.