Whittacker Chambers became a Communist in order to make the world a better place, along rational lines. What he said about Communism applies to the Nazis, who, when they were not atheists, tended to believe in some vague New Age paganism. It applies to many progressives in our day:

“It is Man’s second oldest faith. Its promise was whispered in the first days of creation under the Tree of Knowledge of Good and Evil, ‘Ye shall be as gods.’” These were “irreconcilable opposites—God or Man, Soul or Mind, Freedom or Communism.” [It is] the vision of Man without God."