Critique of Practical Reason
In the Groundwork of the Metaphysics of Morals and the Critique of Practical Reason, Immanuel Kant offers many different criticisms of ethical frameworks and theories against moral theories before him. Kant rarely mentioned Aristotle by name but did not exclude his moral philosophy of virtue ethics from his critique. Many Kantian arguments against Virtue Ethics claim that Virtue Ethics is inconsistent, or sometimes that it isn't a real moral theory at all.