For over a century it has been believed that Alfred Russel Wallace and Henry Walter Bates set out for the Amazon in 1848 with the aim of “solving the problem of the origin of species”. Yet this enticing story is based on only one sentence. Bates claimed in the preface to his 1863 book that Wallace stated this was the aim of their expedition in an 1847 letter. Bates gave a quotation from the letter. But Wallace himself never endorsed or (...) repeated this story. Many writers have acknowledged that this letter still survives. Yet the wording is different from that quoted by Bates and the letter says nothing of an expedition. It is argued that the sentence given by Bates is not a genuine quotation from this or any other Wallace letter but was modified by Bates to promote his own reputation. More significantly, this leads to the conclusion that there was a very sudden and dramatic shift in the way species were thought of and discussed after Darwin’s Origin of species appeared. Something called “the problem of the origin of species” never occurred before Darwin’s book but exploded in frequency immediately after it. A profound change in how species origins were discussed happened which no one seemed to notice. (shrink)

Historians of the Victorian period have begun to re-evaluate the general background and impact of Darwin's theory of the origin of species by means of natural selection. An emerging picture suggests that the Darwinian theory of evolution was only one aspect of a more general change in intellectual positions. It is possible to summarize two correlated developments in the second half of the nineteenth century: the seculariszation of majors areas of thought, and the increasing breakdown of a common intellectual milieu. (...) Studies in linguistics, historical criticism, socio-political theory, theologys, and anthropology, besides evolutionary theory, contributed to these developments. It has also been argued that the background of evolutionary thought lay within a relatively unified early Victorian intellectual context with shared religious, moral, and scientific concepts. Evolutionary theory contributed to the disintegration of this shared context, but it did not intrinsically assume a clear demarcation between value-laden ideas and scientific ideas. On the one hand, in the later Victorian period, religious and scientific intellectuals found it increasingly hard to share common ground. On the other hand, they did sometimes share an enthusiasm for applying biological models to social and ethical theory. It is necessary to look closely before ascribing any increased differentiation of positions to the impact of evolutionary biology. (shrink)

I discuss various reactions to my article “Again, what the philosophy of science is not” [Callebaut (Acta Biotheor 53:92–122 (2005a))], most of which concern the naturalism issue, the place of the philosophy of biology within philosophy of science and philosophy at large, and the proper tasks of the philosophy of biology.

There are few more likeable figures in the history of science than Alfred Russel Wallace. A warm-hearted and generous man, he won the admiration of virtually all who knew him for what one contemporary called ‘the charm of his personality’. Typical of this charm was his behaviour over the potentially sensitive question of his co-authorship with Darwin of the theory of natural selection. Ignoring all the disputes which might so easily have followed the events of 1858, Wallace never ceased to (...) give Darwin all the credit for their theory. In 1864, the author of theOriginchided the younger man for his deference, writing, ‘you ought not … to speak of the theory as mine; it is just as much yours as mine. One correspondent has already noticed to me your “high-minded” conduct on this head’. But Wallace's reply was equally firm, ‘As to the theory of Natural Selection itself, I shall always maintain it to be actually yours and yours only’. If anyone is responsible for the comparative neglect from which the ‘other man’ of Darwinism has suffered, it is the other man himself. (shrink)