The Evolution of Cooperation insects, where the workers – which are sterile, and therefore incapable of passing on their genes – benefit the queen, who is essentially passing on copies of "their" genes. This is further elaborated in the "selfish gene" theory of Richard Dawkins, that the unit of evolution is not the individual organism, but the gene. (As stated by Wilson: "the organism is only DNA's way of making more DNA.") However, kinship selection works only where the individuals involved are closely related; it fails to explain the presence of altruism and cooperation between unrelated individuals, particularly across species. In a 1971 paper
Vestiges of the Natural History of Creation the hypothesis of Lamarck; but it seemed to him to proceed upon a vicious circle, and he dismissed it as wholly inadequate to account for the existence of animated species." The book quickly became a best-seller, and a sensation which was eagerly read in royal circles. Every afternoon for a period early in 1845, Prince Albert read it aloud to Queen Victoria as a suitable popular science book explaining the latest ideas from the continent. Abraham Lincoln is reported to have read the book and been "deeply impressed with the notion of the so-called 'universal law' – evolution." It was