I've read "Origin Of Species" (as it's often called), and I really enjoyed it. Perhaps a few too many mentions of pigeons (with respect to the analogous argument of artificial selection by pigeon breeders), but I love it.
So, I've finally attempted a rock track inspired by Darwin's book, and everything that followed. Most of the words in the track are Darwin's, taken from "Origin Of Species. (1859)" I also mention Darwin's "The Descent Of Man" (1871).
Darwin's book was in part inspired by Reverend Thomas Robert Malthus who had published "An Essay On The Principle Of Population" back in 1798 when Earth's human population was approaching one billion. Indeed, Alfred Russel Wallace (co-discoverer of the theory of evolution in 1858, and published his book "Darwinism" in 1889) was also inspired by reading Malthus, as noted in a letter dated 3rd December 1887:
"The most interesting coincidence in the matter, I think, is, that I as well as Darwin, was led to the theory itself through Malthus..."
Darwin was a great admirer of Malthus, as am I. Hence the mention of Malthus in my track. I wrote about Darwin's views on Malthus here:
http://members.optusnet.com.au/exponentialist/Darwin_Malthus.htm