For what concerns diversity of rites in the sacred liturgy, the Apostolic See has always made its position clear: not only it does not condemn diversity, but it eagerly and willingly grants to each nation the right to keep and preserve the legitimate customs and traditions of its forbears.
Pope Leo XIIIIt is not the part of prudence to neglect that which antiquity in its long experience has approved and which is also taught by apostolic authority.
Pope Leo XIIIIt is an in, a grave evil and a disturbance of the right order, for a larger and higher organisation, to arrogate to itself functions which can be performed efficiently by smaller and lower bodies.
Pope Leo XIIIIt is clear that the main tenet of socialism, community of goods, must be utterly rejected, since it only injures those whom it would seem meant to benefit, is directly contrary to the natural rights of mankind, and would introduce confusion and disorder into the commonweal. The first and most fundamental principle, therefore, if one would undertake to alleviate the condition of the masses, must be the inviolability of private property.
Pope Leo XIII