abstract from the personal differences of rational beings and likewise
from all the content of their private ends, we shall be able to
conceive all ends combined in a systematic whole (including both
rational beings as ends in themselves, and also the special ends which
each may propose to himself), that is to say, we can conceive a
kingdom of ends, which on the preceding principles is possible.

For all rational beings come under the law that each of them must
treat itself and all others never merely as means, but in every case
at the same time as ends in themselves. Hence results a systematic
union of rational being by common objective laws, i.e., a kingdom
which may be called a kingdom of ends, since what these laws have in
view is just the relation of these beings to one another as ends and
means. It is certainly only an ideal.

A rational being belongs as a member to the kingdom of ends when,
although giving universal laws in it, he is also himself subject to
these laws. He belongs to it as sovereign when, while giving laws,
he is not subject to the will of any other.

A rational being must always regard himself as giving laws either as
member or as sovereign in a kingdom of ends which is rendered possible
by the freedom of will. He cannot, however, maintain the latter
position merely by the maxims of his will, but only in case he is a
completely independent being without wants and with unrestricted power
adequate to his will.

Morality consists then in the reference of all action to the
legislation which alone can render a kingdom of ends possible. This
legislation must be capable of existing in every rational being and of