A letter that Charles Darwin wrote to a clergyman patiently explaining how his theory of natural selection works will be sold next month in a Sotheby’s auction.
The letter is dated October 15, 1860, a year after “The Origin of Species” was published, and was written in response to a letter by Rev William Denton, a Victorian clergyman who expressed doubts about Darwin’s theory.
“I am very far from being surprised at anyone not accepting my conclusions on the origin of species,” Darwin wrote.
Darwin explains in six pages how evolution by natural selection works and gaves exampes of natural variation and artificial selection in horses, pigs and cats.
“Those naturalists who go a little way with me, the more they reflect on the subject the further they go,” he adds.
“It’s a very charming letter,” Southeby manuscript specialist Gabriel Heaton told National News. “He doesn’t talk down to Denton, who clearly knows far, far less about the subject matter than he does - it seems that William Denton has probably misread the book but Darwin is very, very generous to him.
“The fact he wrote a long and detailed letter in itself is very generous. They probably didn’t know each other.”
According to New Scientist, the letter is expected to fetch between £20,000 to £30,000, or about U.S. $36,500 to $55,000.