Kant, Immanuel. Groundwork of the Metaphysics of Morals. Trans. by H. J. Paton. Harper & Row: New York, 1964.

Kant, Immanuel. Critique of Pure Reason.

Kant, Immanuel. Critique of Practical Reason.

Kant, Immanuel. Religion Within the Limits of Reason Alone.

Hegel, Georg Wilhelm Friedrich. Philosophy of Right.

Hegel, Georg Wilhelm Friedrich. Reason in History.

Nietzsche, Freidrich. Beyond Good and Evil.

Popular pages: Grounding for the Metaphysics of Morals