Synopsis
Kant's systematic moral philosophy arguing that reason itself legislates the moral law and that autonomy, not happiness, grounds morality.
Core passage idea
Paraphrase · Public domainMorality rests on a law reason gives itself, so acting morally means acting from duty under a principle one could will for everyone, freely and autonomously.
It locates moral authority in rational self-legislation, making human dignity a matter of autonomous reason rather than desire or command.
To avoid a bubble
Pair with John Stuart Mill, Utilitarianism.
Reading note
Read it carefully as rigorous philosophy, keeping the concepts of duty, the moral law, and freedom firmly in view.
Best paired with
John Stuart Mill, Utilitarianism