the distinction between subjective ends which rest on springs, and
objective ends which depend on motives valid for every rational being.
Practical principles are formal when they abstract from all subjective
ends; they are material when they assume these, and therefore
particular springs of action. The ends which a rational being proposes
to himself at pleasure as effects of his actions (material ends) are
all only relative, for it is only their relation to the particular
desires of the subject that gives them their worth, which therefore
cannot furnish principles universal and necessary for all rational
beings and for every volition, that is to say practical laws. Hence
all these relative ends can give rise only to hypothetical
imperatives.

Supposing, however, that there were something whose existence has in
itself an absolute worth, something which, being an end in itself,
could be a source of definite laws; then in this and this alone
would lie the source of a possible categorical imperative, i.e., a
practical law.

Now I say: man and generally any rational being exists as an end
in himself, not merely as a means to be arbitrarily used by this or
that will, but in all his actions, whether they concern himself or
other rational beings, must be always regarded at the same time as
an end. All objects of the inclinations have only a conditional worth,
for if the inclinations and the wants founded on them did not exist,
then their object would be without value. But the inclinations,
themselves being sources of want, are so far from having an absolute
worth for which they should be desired that on the contrary it must be
the universal wish of every rational being to be wholly free from
them. Thus the worth of any object which is to be acquired by our