Commentary   I have just read one of the most sobering yet optimistic books of my life. This work answers the burning question many of us are asking: How do we stop this wonderful planet from swiftly collapsing into an earthly Hell? We must aim for Heaven. We must aim not to contain or appease, but to decisively defeat evil. And by far the most dangerous evil today is communism. And we must work with all other believers in Divine providence to defeat evil in the here and now, to ensure that God’s purpose for this world is fulfilled. To regain Earth for good, we must cast aside our squabbles and unite with others of faith and good will. We have very little time, but good may yet prevail. So says the author of a timely and profound new book, “The Triumph of Good: Cain, Abel and the End of Marxism.” …