"... the unspeakable doctrine of Communism, as it is called, a doctrine
most opposed to the very natural law. For if this doctrine were accepted,
the complete destruction of everyone's laws, government, property, and
even of human society itself would follow."
-Pius IX, Encyclical "Qui Pluribus" (On Faith And Religion), Nov. 9, 1846. Full Text at: tinyurl.com/Qui-Pluribus