On April 20, 1884, Pope Leo XIII published an encyclical, Humanum genus, that said that the human race was separated into two diverse and opposite parts, of which the one steadfastly contends for truth and virtue, the other of those things which are contrary to virtue and to truth.
20 april 1884 offentliggjorde Leo XIII en encyklika, Humanum Genus, som hævdede, at mennesker var: ...skabt i to forskellige og modsatte dele, der den en standhaftigt står for sandhed og dyd, den anden af dydens og sandhedens modsatte.