The categorical imperative is the formal articulation of our duty, a universal obligation. In other words, it is what we must do (or refrain from doing) in all circumstances. Kant provides four formulations of the categorical imperative:
Watch this video which describes the categorical imperative and why Kant thinks it is important.
Source: The University of Shed, https://youtu.be/oDP4vSSuuHk
This work is licensed under a Creative Commons Attribution 3.0 License.