A new edition of Chesterton's 1905 classic collection of essays, in which he takes on the leading thinkers of the time, many of whom he knew personally, one by one. He addresses a variety of subjects, including cosmology, anthropology, and soteriology, and challenges nihilism, humanism, utilitarianism, social Darwinism, eugenics, and other ideologies. This work is Chesterton's most significant and well-read contribution to Christian moral theology and apologetics, together with his book "Orthodoxy."