"...It becomes more evident that love is transformed into mercy when it is necessary to go beyond the precise norm of justice...
The parable of the prodigal son expresses in a simple but profound way the reality of conversion. Conversion is the most concrete expression of the working of love and of the presence of mercy in the human world. The true and proper meaning of mercy does not consist only in looking, however penetratingly and compassionately, at moral, physical or material evil: mercy is manifested in its true and proper aspect when it restores to value, promotes and draws good from all the forms of evil existing in the world and in man. Understood in this way, mercy constitutes the fundamental content of the messianic message of Christ and the constitutive power of His mission. His disciples and followers understood and practiced mercy in the same way. Mercy never ceased to reveal itself, in their hearts and in their actions, as an especially creative proof of the love which does not allow itself to be "conquered by evil," but overcomes "evil with good."
The genuine face of mercy has to be ever revealed anew. In spite of many prejudices, mercy seems particularly necessary for our times."
~Blessed John Paul II, Dives en Misericordia