Summary
Highlights
Joe Aguas introduces Immanuel Kant, an 18th-century German philosopher considered highly influential in the modern period, especially during the Age of Enlightenment. Kant is known for his three critiques: 'Critique of Pure Reason,' 'Critique of Practical Reason,' and 'Critique of Judgment.' This lecture focuses on his moral philosophy, often referred to as 'duty ethics,' which emphasizes duty, categorical imperative, moral law, and the good will. Kant's moral theory highlights duties, motives, the dignity of human persons, and an absolute moral law, which he grounds in reason rather than religious theology or empirical facts, as empirical facts are constantly changing, whereas moral principles must be universal.
The primary aim of Kant's moral philosophy is to discover the foundational principle of a metaphysics of morals, which means uncovering the basic principle of morality. This involves analyzing common-sense moral ideas to state precisely the principles underlying our moral judgments. Secondly, it aims to establish this fundamental moral principle as a demand of each person's rational abilities, making it applicable to all persons through their rational will, thus encompassing autonomy and free choice. Thirdly, moral philosophy should address the question 'What should I do?' by explaining the nature and extent of our ethical obligations. Finally, it must address the ultimate end of human behavior, positing that the highest good for humanity is complete moral virtue combined with complete happiness.
Kant asserts that the only thing good without qualification is a 'good will.' He explains that mental abilities, character traits, and gifts of fortune (like intelligence, courage, wealth, or power) are good but can be misused if not guided by a good will. A good will is when one acts morally because it is intrinsically good, not for any ulterior motive or consequence like fame, power, or happiness. The basic idea is that a good person possesses a will determined by the moral law, making decisions based on what is morally worthy. The value of a good will is not based on desired outcomes but is good in itself.
The decisions of a good will are determined by moral demands or the moral law, and a morally good will acts based on moral duty. Kant distinguishes between acting 'in accordance with duty' and acting 'from duty.' For example, avoiding cheating to project a good image is acting in accordance with duty, but doing so because it is a moral obligation, based on the moral law, is acting from duty, exhibiting genuine moral worth. Actions motivated by self-interest, self-preservation, sympathy, or happiness, though they may seem good, lack genuine moral worth in Kant's view because they do not spring from a good will. Our actions should be motivated by respect for the lawfulness of the moral law, which transcends ordinary laws (like traffic rules) and applies to us as rational beings, not just as members of a social group.
The fundamental principle of moral duties is the 'categorical imperative.' An imperative is a command that tells us how to exercise our will. It is 'categorical' because it is unconditional; actions are done simply because they are right, without reference to any specific ends or conditions. This contrasts with a 'hypothetical imperative,' which is a conditional command (e.g., 'If you want a good career, study hard'). The categorical imperative, though a single moral principle, has three formulations: 1) Act only on a maxim that you can at the same time will to become a universal moral law (universalizability). 2) Treat humanity, whether in yourself or others, always as an end and never merely as a means (respect for human dignity). 3) Act so that your will can regard itself as making a universal law (autonomy of the will).
Kant defines virtue as the moral strength of a human being's will in fulfilling duty, while vice is principled immorality. For Kant, virtue is the act of acting according to moral principles, grounded on the will itself, not on emotions, feelings, or desires. Unlike Aristotelian ethics, Kant does not see virtue as a habit or a 'second nature' acquired through repetition. Instead, it's a disposition of one's will to adhere to moral principles. Kant contends that even repeatedly doing good actions compatible with moral principles might not indicate genuine moral strength if one hasn't faced and overcome significant temptation. A person with a truly good will will find temptations insignificant due to the firm resolve of their will to follow what is right.
The lecture concludes with Kant's insightful quote: 'Morality is not the doctrine of how we make ourselves happy, but how we make ourselves worthy of happiness.' This emphasizes that true happiness is not directly pursued but rather achieved as a byproduct of living a morally upright life, driven by duty and a good will.