We must act only on those maxims that we can consistently will as a universal law.

Autonomy is central in certain moral frameworks, both as a model of the moral person — the feature of the person by virtue of which she is morally obligated — and as the aspect of persons which grounds others’ obligations to her or him. For Kant, the self-imposition of universal moral law is the ground of both moral obligation generally and the respect others owe to us (and we owe ourselves). In short, practical reason — our ability to use reasons to choose our own actions — presupposes that we