The 1860 Oxford evolution debate took place at the Oxford University Museum in Oxford, England, on 7 July 1860, seven months after the publication of Charles Darwin's On the Origin of Species. Several prominent British scientists and philosophers participated, including Thomas Henry Huxley, Bishop Samuel Wilberforce, Benjamin Brodie, Joseph Dalton Hooker and Robert FitzRoy.
The encounter is often known as the Huxley–Wilberforce debate or the Wilberforce–Huxley debate, although this description is somewhat misleading. It was not a formal debate between the two, but rather it was an animated discussion after the presentation of a paper by John William Draper of New York University, on the intellectual development of Europe with relation to Darwin's theory (one of a number of scientific papers presented during the week as part of the British Association's annual meeting). Although Huxley and Wilberforce were not the only participants in the discussion, they were reported to be the two dominant parties.
The debate is best remembered today for a heated exchange in which Wilberforce supposedly asked Huxley whether it was through his grandfather or his grandmother that he claimed his descent from a monkey. Huxley is said to have replied that he would not be ashamed to have a monkey for his ancestor, but he would be ashamed to be connected with a man who used his great gifts to obscure the truth. However, what Huxley and Wilberforce actually said is uncertain, and subsequent accounts were subject to distortion since no verbatim account of the debate exists. One eyewitness suggests that Wilberforce's question to Huxley may have been "whether, in the vast shaky state of the law of development, as laid down by Darwin, any one can be so enamoured of this so-called law, or hypothesis, as to go into jubilation for his great great grandfather having been an ape or a gorilla?", whereas another suggests he may have said that "it was of little consequence to himself whether or not his grandfather might be called a monkey or not."
The idea of transmutation of species was seen as contrary to religious orthodoxy and a threat to the social order and thus was very controversial in the first half of the nineteenth century, although Radicals seeking to widen democracy and overturn the aristocratic hierarchy welcomed it. The scientific community was wary in the absence of a proposed mechanism.
The anonymous publication of Vestiges of the Natural History of Creation, supporting the idea of transmutation of species, in 1844 brought a storm of controversy but attracted wide readership and became a bestseller. At the British Association for the Advancement of Science meeting at Oxford in May 1847, the Bishop of Oxford Samuel Wilberforce used his Sunday sermon at St. Mary's Church on "the wrong way of doing science" to deliver a stinging attack obviously aimed at its author, Robert Chambers, in a church "crowded to suffocation" with archaeologists, geoscientists, astronomers, chemists, physicists, and biologists. The scientific establishment also remained skeptical, but the book had convinced a vast popular audience.
Charles Darwin's On the Origin of Species was published on 24 November 1859 to wide debate and controversy. Influential biologist Richard Owen wrote an anonymous negative review of the book in the Edinburgh Review and coached Wilberforce, who also wrote an anonymous 17,000-word review in the Quarterly Review.
Thomas Henry Huxley, one of the small group with whom Darwin had shared his theory before publication, emerged as the main public champion of evolution. He wrote a favourable review of "Origin" in The Times in December 1859, along with several other articles, and delivered a lecture at the Royal Institution in February 1860.
The reaction of many orthodox churchmen was hostile, but their attention was diverted in February 1860 by a much greater furore over the publication of Essays and Reviews by seven liberal theologians. Amongst them, the Reverend Baden Powell had already praised evolutionary ideas, and in his essay he commended "Mr. Darwin's masterly volume" for substantiating "the grand principle of the self-evolving powers of nature".
The controversy was at the centre of attention when the British Association for the Advancement of Science (often referred to then simply as "the BA") convened their annual meeting at the new Oxford University Museum of Natural History in June 1860. On Thursday 28 June, Charles Daubeny read a paper "On the final causes of the sexuality in plants, with particular reference to Mr. Darwin's work..." Owen and Huxley were both in attendance, and a debate erupted over Darwin's theory. Owen spoke of facts which would enable the public to "come to some conclusions ... of the truth of Mr. Darwin's theory" and repeated an anatomical argument which he had first presented in 1857, that "the brain of the gorilla was more different from that of man than from that of the lowest primate particularly because only man had a posterior lobe, a posterior horn, and a hippocampus minor." Huxley was convinced this was incorrect and had researched its errors. For the first time he spoke publicly on this point and "denied altogether that the difference between the brain of the gorilla and man was so great" in a "direct and unqualified contradiction" of Owen, citing previous studies as well as promising to provide detailed support for his position.
Wilberforce agreed to address the meeting on Saturday morning, and there was expectation that he would repeat his success at scourging evolutionary ideas as at the 1847 meeting. Huxley was initially reluctant to engage Wilberforce in a public debate about evolution, but, in a chance encounter, Robert Chambers persuaded him not to desert the cause. The Reverend Baden Powell would have been on the platform, too, but he had died of a heart attack on 11 June.
Word spread that Bishop Samuel Wilberforce would speak against Darwin's theory at the meeting on Saturday 30 June 1860. Wilberforce was one of the greatest public speakers of his day but was known as "Soapy Sam" (from a comment by Benjamin Disraeli that the Bishop's manner was "unctuous, oleaginous, saponaceous"). According to Bryson, "more than a thousand people crowded into the chamber; hundreds more were turned away." Darwin himself was too sick to attend.
The discussion was chaired by John Stevens Henslow, Darwin's former mentor from Cambridge. It has been suggested that Owen arranged for Henslow to chair the discussion "hoping to make the expected defeat of Darwin the more complete". The main focus of the meeting was supposed to be a lecture by New York University's John William Draper, "On the Intellectual Development of Europe, considered with reference to the views of Mr. Darwin and others, that the progression of organisms is determined by law". By all accounts, Draper's presentation was long and boring. After Draper had finished, Henslow called on several other speakers, including Benjamin Brodie, the president of the Royal Society, before it was Wilberforce's turn.
In a letter to his brother Edward, the ornithologist Alfred Newton wrote:
In the Nat. Hist. Section we had another hot Darwinian debate ... After [lengthy preliminaries] Huxley was called upon by Henslow to state his views at greater length, and this brought up the Bp. of Oxford ... Referring to what Huxley had said two days before, about after all its not signifying to him whether he was descended from a Gorilla or not, the Bp. chafed him and asked whether he had a preference for the descent being on the father's side or the mother's side? This gave Huxley the opportunity of saying that he would sooner claim kindred with an Ape than with a man like the Bp. who made so ill a use of his wonderful speaking powers to try and burke, by a display of authority, a free discussion on what was, or was not, a matter of truth, and reminded him that on questions of physical science 'authority' had always been bowled out by investigation, as witness astronomy and geology.