Much like the theories James describes in his landmark work Pragmatism, radical empiricism evaluates the truth of a statement based on experiences and observations that we can actually have. This view doesn’t exclude religion, as religion can be directly experienced, even if people may differ on exactly what the experience is. Anything that can be experienced must, by definition, exist, and therefore can be analyzed using radical empiricism.
When these lectures were given, the academic consensus was in favor of some version of the absolute. James spends much of the lectures discussing and critiquing the ideas of other philosophers, in particular Hegel, Fechner, and Bergson. He finds much to like in each of the works he discusses, but finds them all incomplete.
This book is part of the Standard Ebooks project, which produces free public domain ebooks.