243 To be sure, “it is no easy task to overcome the bitter legacy of injustices, hostility and mistrust left by conflict. It can only be done by overcoming evil with good (cf. Rom 12:21) and by cultivating those virtues which foster reconciliation, solidarity and peace”. In this way, “persons who nourish goodness in their heart find that such goodness leads to a peaceful conscience and to profound joy, even in the midst of difficulties and misunderstandings. Even when affronted, goodness is never weak but rather, shows its strength by refusing to take revenge”. Each of us should realize that “even the harsh judgment I hold in my heart against my brother or my sister, the open wound that was never cured, the offense that was never forgiven, the rancour that is only going to hurt me, are all instances of a struggle that I carry within me, a little flame deep in my heart that needs to be extinguished before it turns into a great blaze”.
Source: Fratelli Tutti (Vatican.va)