In teaching us charity, the Gospel instructs us in the preferential respect due to the poor and the special situation they have in society: the more fortunate should renounce some of their rights so as to place their goods more generously at the service of others. Pope Paul VI, Octogesima Adveniens (1971), n.23.
Without putting themselves in the place of the institutions of civil society, [Christian organisations] have to express, in their own way and rising above their particular nature, the concrete demands of the Christian faith for a just, and consequently necessary, transformation of society. Paul VI, Octogesima Adveniens (1971), n.51.
"You are called to dedicate yourselves to the common good, also through the service to people called politics. This, as Blessed Paul VI affirms, 'is the highest and most effective form of charity'." pope francis, 30 april 2015