Metaphysics

An Enquiry Concerning Human Understanding

What Is Reality

The Happiness of Heaven

Life and Matter: A Criticism of Professor Haeckel's “Riddle of the Universe”

Hegel: Lectures on Philosophy

Ethics

Sun-Clear Statement

A Pluralistic Universe

Categories (Κατηγορίαι)

Life's Basis and Life's Ideal: The Fundamentals of a New Philosophy of Life

Of the Nature of Things

Decoding the Matrix