The cross symbolizes a cosmic as well as historic truth. Love conquers the world, but its victory is not an easy one.
The Communists do have a god, the Dialectic of History, which guarantees everything that they're going to do and guarantees them victory; that's why they're fanatic.
Despotism, which we regard with abhorrence, is rather too plausible in decaying feudal, agrarian, pastoral societies. That's why we must expect to have many a defeat before we'll have an ultimate victory in this contest with Communism.