Religion within the Limits of Mere Reason

Tuesdays With Morrie: The most uplifting book ever written about the importance of human connection

Dreams of a Ghost-Seer

Kant's Three Critiques: The Critique of Pure Reason, The Critique of Practical Reason & The Critique of Judgment: The Base Plan for Transcendental Philosophy, The Theory of Moral Reasoning and The Critiques of Aesthetic and Teleological Judgment

Critique of Practical Reason

Thus Spoke Zarathustra

Observations on the Sense of the Beautiful and the Sublime

Kant’s Foundations of Ethics

Many Lives, Many Masters: The True Story of a Prominent Psychiatrist, His Young Patient, and the Past-Life Therapy That Changed Both Their Lives

Groundwork for the Metaphysics of Morals

Universal Natural History and Theory of Heaven

Kant's Introduction to Logic and His Essay on the Mistaken Subtilty of the Four Figures

Why Materialism Is Baloney: How True Skeptics Know There Is No Death and Fathom Answers to life, the Universe, and Everything

The Dispute of the Faculties

Kant's Prolegomena to Any Future Metaphysics: Exploring the Boundaries of Human Knowledge in Kant's Critical Philosophy

Critique of Judgment

Finite and Infinite Games

Metaphysical Foundations of Natural Science

The Ethics of Immanuel Kant: Metaphysics of Morals - Philosophy of Law & The Doctrine of Virtue + Perpetual Peace + The Critique of Practical Reason: Theory of Moral Reasoning