Pacem, Dei Munus Pulcherrimum §11

¹¹ When one regards all these miseries by which the human race is stricken one inevitably thinks of the traveller in the Gospel who, going down from Jerusalem to Jericho, fell among thieves, who robbed him, and covered him with wounds and left him half dead. The two cases are very similar; and as to the traveller there came the good Samaritan, full of compassion, who bound up his wounds, pouring in oil and wine, took him to an inn, and undertook all care for him; so too is it necessary that Jesus, of Whom the Samaritan was the figure, should lay His hands upon the wounds of society.