It’s kind of deflating, isn’t it? Darwin’s theory of evolution by natural selection can be inspiring: perhaps you’re awed by the vastness of geologic time or marvel at the variety of Earth’s creatures. The ability to appreciate and understand nature is just the sort of thing that is supposed to make us special, but instead it allowed us to realize that we’re merely a recent variation on the primate body plan. We may have a greater capacity for abstract thought than chimps do, but we’re weaker than gorillas, less agile in the treetops than orangutans and more ill-tempered than bonobos.
Charles Darwin started life as a creationist and only gradually came to realize the significance of the variation he observed in his travels aboard the Beagle. For the past 151 years, since On the Origin of Species was published, people have been arguing over evolution. Our ape ancestry conflicts with every culture’s creation myth and isn’t particularly intuitive, but everything we’ve learned since then—in biology, geology, genetics, paleontology, even chemistry and physics—supports his great insight.