expected effect? It cannot lie anywhere but in the principle of the
will without regard to the ends which can be attained by the action.
For the will stands between its a priori principle, which is formal,
and its a posteriori spring, which is material, as between two
roads, and as it must be determined by something, it that it must be
determined by the formal principle of volition when an action is
done from duty, in which case every material principle has been
withdrawn from it.

The third proposition, which is a consequence of the two
preceding, I would express thus Duty is the necessity of acting from
respect for the law. I may have inclination for an object as the
effect of my proposed action, but I cannot have respect for it, just
for this reason, that it is an effect and not an energy of will.
Similarly I cannot have respect for inclination, whether my own or
another's; I can at most, if my own, approve it; if another's,
sometimes even love it; i.e., look on it as favourable to my own
interest. It is only what is connected with my will as a principle, by
no means as an effect- what does not subserve my inclination, but
overpowers it, or at least in case of choice excludes it from its
calculation- in other words, simply the law of itself, which can be an
object of respect, and hence a command. Now an action done from duty
must wholly exclude the influence of inclination and with it every
object of the will, so that nothing remains which can determine the
will except objectively the law, and subjectively pure respect for
this practical law, and consequently the maxim * that I should follow
this law even to the thwarting of all my inclinations.