20 If this action, which is social in the Christian sense of the term develops and grows in accordance with its own nature, there will be no danger, as is feared, that those other institutions, which the piety of our ancestors have established and which are now flourishing, will decline or be absorbed by new foundations. Both of them spring from the same root of charity and religion, and not only do not conflict with each other, but can easily be made to coalesce and combine so perfectly as to provide, all the better by the pooling of their beneficent efforts, for the needs of the masses and for the daily increasing perils to which they are exposed.
Source: Graves de Communi Re (Vatican.va)