Abstract

The sixth chapter of Charles Darwin’s Origin of Species is called “Difficulties of the Theory.” In that part of his work, Darwin reveals some possible objections to his theory and attempts to provide an answer to all of them. Such a chapter was part of the first edition of the Origin of Species; therefore, the difficulties described were not reactions derived from the publication of the book. Instead, friends like Charles Lyell have probably presented some of them. Others can be found in works published before Darwin’s work, such as Natural Theology by William Paley, which argued for creationism and introduced arguments against any natural explanation of the origin of species. Many other problems dealt with in the sixth chapter were born, however, from Darwin’s own internal dialogue, his own initial doubts concerning the theory, and his anticipation of criticism, as one can gather from his manuscripts. This paper describes the main difficulties shown in the sixth chapter of the Origin of Species, providing a more detailed exposition of a few topics, and analyzing Darwin’s defense, in those cases. It also discusses some of the weak points in Darwin’s line of reasoning from a diachronic point of view.