Roy Rappaport argues that religion is central to the continuing evolution of life, although it has been displaced from its original position of intellectual authority by the rise of modern science. His book, which could be construed as in some degree religious as well as about religion, insists that religion can and must be reconciled with science. Combining adaptive and cognitive approaches to the study of humankind, he mounts a comprehensive analysis of religion's evolutionary significance, seeing it as co-extensive with the invention of language and hence of culture as we know it.