Not a lucky guess: James Costa argues Alfred Russel Wallace was Charles Darwin’s intellectual equalWho said the following? Expecting a vigorous debate over this paper, Wallace was met with complete silence. It has never been out of print and evolution by natural selection has been a matter of public interest ever since. Darwin is rightly famous for his skill in communicating the concept of natural selection to a general audience. Radical by Nature: The Revolutionary Life of Alfred Russel Wallace, by James T Costa, Princeton University Press 2025.