For Kant, the concept of duty is something that you ought to do despite not wanting to, assuming the duty is possible. Empirical concepts are ideas we reach from our experiences in the world Kant believes this is clear from the previous examples.
Kant emphasizes that an a priori understanding of morality will further our pursuit to perform in accordance with morality without the distraction of personal inclination and interest.
Human beings are organized for life—to live, and to continue living.
It is the same with power and wealth, which can be good, but can also make the person who has them arrogant. Westphal who focuses on the contradiction in the conception test of the categorical imperative in its version as the Universal Law of Right.