At this point, with little warning, the book begins to veer off the rails. Johnson notes repeatedly that Darwin had a fairly racist view of native peoples—he called them “savages”—and that he vastly overestimated the implications of Malthus’ theory of overpopulation. Fair enough, though Johnson’s fixation on these shortcomings overshadows the fact that Darwin’s views were widely shared among Britons. Johnson claims that most of Darwin’s next two books, The Expression of the Emotions in Man and Animals and The Descent of Man were largely “rambling stuff of no scientific value.” That’s a massive overstatement, but there’s no harm in remembering Darwin’s flaws, misunderstandings, and racist ignorance.
There is harm, however—intellectual harm, historical harm, and moral harm—in attributing to Darwin a startling majority of the 20th century’s tragedies. This is what Johnson attempts to do in the later pages of his book. We are informed that Darwin’s theory led directly to the development of eugenics and forced sterilization, and that the United States’ pre-World War II anti-immigrant policies “can be traced back to the publication of Origin.” Even more sinisterly, Darwin’s book was allegedly relied upon by the Nazis in developing their racial theories, and Marx cited it in support of communism. “Both Himmler, head of the SS and Goebbels, the propaganda chief,” were students of Darwin, Johnson ominously reminds us, and Hitler apparently carried the theory of natural selection “to its logical conclusion.” “Leading Communists,” moreover, “from Lenin to Trotsky to Stalin and Mao Tse-tung” considered evolution “essential to the self-respect of Communists. … Darwin provided stiffening to the scaffold of laws and dialectic they erected around their seizure of power.”
Even Stalin—not a learned man by any stretch—“had Darwin’s ‘struggle’ and ‘survival of the fittest’ in mind” when murdering entire ethnic groups, as did Pol Pot, by Johnson’s telling. Maybe Darwin wouldn’t have wanted all of this bloodshed, Johnson concedes, but he claims the “emotional stew” Darwin built up in Origin played a major part in the development of the 20th century’s genocides. Johnson’s most laughable claim is that Darwin’s word choice may have partly inspired Hitler to write Mein Kampf—it means “My Struggle,” a word Darwin uses “dozens of times”(!)—although we do get the caveat that “it is doubtful if Adolf Hitler actually read the Origin.”
And so on. You get the idea: Johnson marches again and again up to the line of actually blaming Darwin for millions of deaths, relying on guilt by association to make his point. It’s a dirty game, and a dangerous one, for character assassination can be a much more effective way of rejecting natural selection than is flat-out denial. Johnson spends the last pages of the book discussing Darwin’s supposedly cranky old age—according to the author, Darwin entirely lost his taste for the arts and human interaction—and, with breathtakingly little evidence, blames it on the scientist’s own theory. Natural selection, Johnson writes, caused Darwin to “close his mind to speculation about the infinite,” to reject God, to see human development as a constant cycle of cruelty. (It apparently did not occur to Johnson that many old people are sickly or pessimistic, even those who didn’t develop a comprehensive theory of evolution.)
Nor will the rest of us fare any better than Darwin did: So long as we accept evolution wholeheartedly, we will spend our lives dangling above the “huge bottomless emptiness of life,” an emptiness which Darwin felt “yawning” in his last days. Johnson would rather we combine evolution and religion (he is a devout Catholic) to some unstated degree; it is his belief that humans have now conquered natural selection, and that we must keep room for morality in our lives. Or something. It’s really impossible to say what Johnson wants us to take away from this book, except that Darwin was not a saint and that his theory wasn’t perfect. Both points are true, but they do nothing to support the reprehensible theses that Darwin was responsible for millions of deaths and that acceptance of his theories leads to personal misery. Many nonreligious people recognize the truth of natural selection without collapsing into nihilistic despair; one need not reject the reality of evolution in order to live a meaningful, moral life. To suggest otherwise, as Johnson does, is an insulting and illogical demand that we must either abandon science for blind belief or else face a lifetime of anguish. Johnson’s book does readers a great disservice, masquerading as an objective biography before descending into mud-slinging nonsense. A few of my former classmates might appreciate his work. But no thoughtful reader could possibly tolerate Johnson’s stunning intellectual dishonesty.