In the kingdom of ends everything has either Value or Dignity.  Whatever has a value can be replaced by something else which is equivalent; whatever, on the other hand, is above all value, and therefore admits of no equivalent, has a dignity.

Whatever has reference to the general inclinations and wants of mankind has a market value; whatever, without presupposing a want, corresponds to a certain taste, that is to a satisfaction in the mere purposeless play of our faculties, has a fancy value; but that which constitutes the condition under which alone anything can be an end in itself, this has not merely a relative worth, i. e., value, but an intrinsic worth, that is dignity.

Now morality is the condition under which alone a rational being can be an end in himself, since by this alone it is possible that he should be a legislating member in the kingdom of ends.  Thus morality, and humanity as capable of it, is that which alone has dignity.  Skill and diligence in labour have a market value; wit, lively imagination, and humour, have fancy value; on the other hand, fidelity to promises, benevolence from principle (not from instinct), have an intrinsic worth.  Neither nature nor art contains anything which in default of these it could put in their place, for their worth consists not in the effects which spring from them, not in the use and advantage which they secure, but in the disposition of mind, that is, the maxims of the will which are ready to manifest themselves in such actions, even though they should not have the desired effect.  These actions also need no recommendation from any subjective taste or sentiment, that they may be looked on with immediate favour and satisfaction:  they need no immediate propension or feeling for them; they exhibit the will that performs them as an object of an immediate respect, and nothing but reason is required to impose them on the will; not to flatter it into them, which, in the case of duties, would be a contradiction.  This estimation therefore shows that the worth of such a disposition is dignity, and places it infinitely above all value, with which it cannot for a moment be brought into comparison or competition without as it were violating its sanctity.

What then is it which justifies virtue or the morally good disposition, in making such lofty claims?  It is nothing less than the privilege it secures to the rational being of participating in the giving of universal laws, by which it qualifies him to be a member of a possible kingdom of ends, a privilege to which he was already destined by his own nature as being an end in himself, and on that account legislating in the kingdom of ends; free as regards all laws of physical nature, and obeying those only which he himself gives, and by which his maxims can belong to a system of universal law, to which at the same time he submits himself.  For nothing has any worth except what the law assigns it.  Now the legislation itself which assigns the worth of everything, must for that very reason possess dignity, that is an unconditional incomparable worth, and the word respect alone supplies a becoming expression for the esteem which a rational being must have for it.  Autonomy then is the basis of the dignity of human and of every rational nature.