Fundamental Principles of the Metaphysic of Morals
Fundamental Principles of the Metaphysic of MoralsPREFACETRANSITION FROM THE COMMON RATIONAL KNOWLEDGE OF MORALITY TO THE PHILOSOPHICALTRANSITION FROM POPULAR MORAL PHILOSOPHY TO THE METAPHYSIC OF MORALSTRANSITION FROM THE METAPHYSIC OF MORALS TO THE CRITIQUE OF PURE PRACTICAL REASONCopyright
Fundamental Principles of the Metaphysic of Morals
Immanuel Kant
PREFACE
Ancient Greek philosophy was divided into three sciences:
physics, ethics, and logic. This division is perfectly suitable to
the nature of the thing; and the only improvement that can be made
in it is to add the principle on which it is based, so that we may
both satisfy ourselves of its completeness, and also be able to
determine correctly the necessary subdivisions.All rational knowledge is either material or formal: the
former considers some object, the latter is concerned only with the
form of the understanding and of the reason itself, and with the
universal laws of thought in general without distinction of its
objects. Formal philosophy is called logic. Material philosophy,
however, has to do with determinate objects and the laws to which
they are subject, is again twofold; for these laws are either laws
of nature or of freedom. The science of the former is physics, that
of the latter, ethics; they are also called natural philosophy and
moral philosophy respectively.Logic cannot have any empirical part; that is, a part in
which the universal and necessary laws of thought should rest on
grounds taken from experience; otherwise it would not be logic,
i.e., a canon for the understanding or the reason, valid for all
thought, and capable of demonstration. Natural and moral
philosophy, on the contrary, can each have their empirical part,
since the former has to determine the laws of nature as an object
of experience; the latter the laws of the human will, so far as it
is affected by nature: the former, however, being laws according to
which everything does happen; the latter, laws according to which
everything ought to happen. Ethics, however, must also consider the
conditions under which what ought to happen frequently does
not.We may call all philosophy empirical, so far as it is based
on grounds of experience: on the other band, that which delivers
its doctrines from a priori principles alone we may call pure
philosophy. When the latter is merely formal it is logic; if it is
restricted to definite objects of the understanding it is
metaphysic.In this way there arises the idea of a twofold metaphysic- a
metaphysic of nature and a metaphysic of morals. Physics will thus
have an empirical and also a rational part. It is the same with
Ethics; but here the empirical part might have the special name of
practical anthropology, the name morality being appropriated to the
rational part.All trades, arts, and handiworks have gained by division of
labour, namely, when, instead of one man doing everything, each
confines himself to a certain kind of work distinct from others in
the treatment it requires, so as to be able to perform it with
greater facility and in the greatest perfection. Where the
different kinds of work are not distinguished and divided, where
everyone is a jack-of-all-trades, there manufactures remain still
in the greatest barbarism. It might deserve to be considered
whether pure philosophy in all its parts does not require a man
specially devoted to it, and whether it would not be better for the
whole business of science if those who, to please the tastes of the
public, are wont to blend the rational and empirical elements
together, mixed in all sorts of proportions unknown to themselves,
and who call themselves independent thinkers, giving the name of
minute philosophers to those who apply themselves to the rational
part only- if these, I say, were warned not to carry on two
employments together which differ widely in the treatment they
demand, for each of which perhaps a special talent is required, and
the combination of which in one person only produces bunglers. But
I only ask here whether the nature of science does not require that
we should always carefully separate the empirical from the rational
part, and prefix to Physics proper (or empirical physics) a
metaphysic of nature, and to practical anthropology a metaphysic of
morals, which must be carefully cleared of everything empirical, so
that we may know how much can be accomplished by pure reason in
both cases, and from what sources it draws this its a priori
teaching, and that whether the latter inquiry is conducted by all
moralists (whose name is legion), or only by some who feel a
calling thereto.As my concern here is with moral philosophy, I limit the
question suggested to this: Whether it is not of the utmost
necessity to construct a pure thing which is only empirical and
which belongs to anthropology? for that such a philosophy must be
possible is evident from the common idea of duty and of the moral
laws. Everyone must admit that if a law is to have moral force,
i.e., to be the basis of an obligation, it must carry with it
absolute necessity; that, for example, the precept, "Thou shalt not
lie," is not valid for men alone, as if other rational beings had
no need to observe it; and so with all the other moral laws
properly so called; that, therefore, the basis of obligation must
not be sought in the nature of man, or in the circumstances in the
world in which he is placed, but a priori simply in the conception
of pure reason; and although any other precept which is founded on
principles of mere experience may be in certain respects universal,
yet in as far as it rests even in the least degree on an empirical
basis, perhaps only as to a motive, such a precept, while it may be
a practical rule, can never be called a moral law.Thus not only are moral laws with their principles
essentially distinguished from every other kind of practical
knowledge in which there is anything empirical, but all moral
philosophy rests wholly on its pure part. When applied to man, it
does not borrow the least thing from the knowledge of man himself
(anthropology), but gives laws a priori to him as a rational being.
No doubt these laws require a judgement sharpened by experience, in
order on the one hand to distinguish in what cases they are
applicable, and on the other to procure for them access to the will
of the man and effectual influence on conduct; since man is acted
on by so many inclinations that, though capable of the idea of a
practical pure reason, he is not so easily able to make it
effective in concreto in his life.A metaphysic of morals is therefore indispensably necessary,
not merely for speculative reasons, in order to investigate the
sources of the practical principles which are to be found a priori
in our reason, but also because morals themselves are liable to all
sorts of corruption, as long as we are without that clue and
supreme canon by which to estimate them correctly. For in order
that an action should be morally good, it is not enough that it
conform to the moral law, but it must also be done for the sake of
the law, otherwise that conformity is only very contingent and
uncertain; since a principle which is not moral, although it may
now and then produce actions conformable to the law, will also
often produce actions which contradict it. Now it is only a pure
philosophy that we can look for the moral law in its purity and
genuineness (and, in a practical matter, this is of the utmost
consequence): we must, therefore, begin with pure philosophy
(metaphysic), and without it there cannot be any moral philosophy
at all. That which mingles these pure principles with the empirical
does not deserve the name of philosophy (for what distinguishes
philosophy from common rational knowledge is that it treats in
separate sciences what the latter only comprehends confusedly);
much less does it deserve that of moral philosophy, since by this
confusion it even spoils the purity of morals themselves, and
counteracts its own end.Let it not be thought, however, that what is here demanded is
already extant in the propaedeutic prefixed by the celebrated Wolf
to his moral philosophy, namely, his so-called general practical
philosophy, and that, therefore, we have not to strike into an
entirely new field. Just because it was to be a general practical
philosophy, it has not taken into consideration a will of any
particular kind- say one which should be determined solely from a
priori principles without any empirical motives, and which we might
call a pure will, but volition in general, with all the actions and
conditions which belong to it in this general signification. By
this it is distinguished from a metaphysic of morals, just as
general logic, which treats of the acts and canons of thought in
general, is distinguished from transcendental philosophy, which
treats of the particular acts and canons of pure thought, i.e.,
that whose cognitions are altogether a priori. For the metaphysic
of morals has to examine the idea and the principles of a possible
pure will, and not the acts and conditions of human volition
generally, which for the most part are drawn from psychology. It is
true that moral laws and duty are spoken of in the general moral
philosophy (contrary indeed to all fitness). But this is no
objection, for in this respect also the authors of that science
remain true to their idea of it; they do not distinguish the
motives which are prescribed as such by reason alone altogether a
priori, and which are properly moral, from the empirical motives
which the understanding raises to general conceptions merely by
comparison of experiences; but, without noticing the difference of
their sources, and looking on them all as homogeneous, they
consider only their greater or less amount. It is in this way they
frame their notion of obligation, which, though anything but moral,
is all that can be attained in a philosophy which passes no
judgement at all on the origin of all possible practical concepts,
whether they are a priori, or only a posteriori.Intending to publish hereafter a metaphysic of morals, I
issue in the first instance these fundamental principles. Indeed
there is properly no other foundation for it than the critical
examination of a pure practical Reason; just as that of metaphysics
is the critical examination of the pure speculative reason, already
published. But in the first place the former is not so absolutely
necessary as the latter, because in moral concerns human reason can
easily be brought to a high degree of correctness and completeness,
even in the commonest understanding, while on the contrary in its
theoretic but pure use it is wholly dialectical; and in the second
place if the critique of a pure practical reason is to be complete,
it must be possible at the same time to show its identity with the
speculative reason in a common principle, for it can ultimately be
only one and the same reason which has to be distinguished merely
in its application. I could not, however, bring it to such
completeness here, without introducing considerations of a wholly
different kind, which would be perplexing to the reader. On this
account I have adopted the title of Fundamental Principles of the
Metaphysic of Morals instead of that of a Critical Examination of
the pure practical reason.But in the third place, since a metaphysic of morals, in
spite of the discouraging title, is yet capable of being presented
in popular form, and one adapted to the common understanding, I
find it useful to separate from it this preliminary treatise on its
fundamental principles, in order that I may not hereafter have need
to introduce these necessarily subtle discussions into a book of a
more simple character.The present treatise is, however, nothing more than the
investigation and establishment of the supreme principle of
morality, and this alone constitutes a study complete in itself and
one which ought to be kept apart from every other moral
investigation. No doubt my conclusions on this weighty question,
which has hitherto been very unsatisfactorily examined, would
receive much light from the application of the same principle to
the whole system, and would be greatly confirmed by the adequacy
which it exhibits throughout; but I must forego this advantage,
which indeed would be after all more gratifying than useful, since
the easy applicability of a principle and its apparent adequacy
give no very certain proof of its soundness, but rather inspire a
certain partiality, which prevents us from examining and estimating
it strictly in itself and without regard to
consequences.I have adopted in this work the method which I think most
suitable, proceeding analytically from common knowledge to the
determination of its ultimate principle, and again descending
synthetically from the examination of this principle and its
sources to the common knowledge in which we find it employed. The
division will, therefore, be as follows:1 FIRST SECTION. Transition from the common rational
knowledge of morality to the philosophical.2 SECOND SECTION. Transition from popular moral philosophy to
the metaphysic of morals.3 THIRD SECTION. Final step from the metaphysic of morals to
the critique of the pure practical reason.
TRANSITION FROM THE COMMON RATIONAL KNOWLEDGE OF MORALITY TO THE
PHILOSOPHICAL
Nothing can possibly be conceived in the world, or even out
of it, which can be called good, without qualification, except a
good will. Intelligence, wit, judgement, and the other talents of
the mind, however they may be named, or courage, resolution,
perseverance, as qualities of temperament, are undoubtedly good and
desirable in many respects; but these gifts of nature may also
become extremely bad and mischievous if the will which is to make
use of them, and which, therefore, constitutes what is called
character, is not good. It is the same with the gifts of fortune.
Power, riches, honour, even health, and the general well-being and
contentment with one's condition which is called happiness, inspire
pride, and often presumption, if there is not a good will to
correct the influence of these on the mind, and with this also to
rectify the whole principle of acting and adapt it to its end. The
sight of a being who is not adorned with a single feature of a pure
and good will, enjoying unbroken prosperity, can never give
pleasure to an impartial rational spectator. Thus a good will
appears to constitute the indispensable condition even of being
worthy of happiness.There are even some qualities which are of service to this
good will itself and may facilitate its action, yet which have no
intrinsic unconditional value, but always presuppose a good will,
and this qualifies the esteem that we justly have for them and does
not permit us to regard them as absolutely good. Moderation in the
affections and passions, self-control, and calm deliberation are
not only good in many respects, but even seem to constitute part of
the intrinsic worth of the person; but they are far from deserving
to be called good without qualification, although they have been so
unconditionally praised by the ancients. For without the principles
of a good will, they may become extremely bad, and the coolness of
a villain not only makes him far more dangerous, but also directly
makes him more abominable in our eyes than he would have been
without it.A good will is good not because of what it performs or
effects, not by its aptness for the attainment of some proposed
end, but simply by virtue of the volition; that is, it is good in
itself, and considered by itself is to be esteemed much higher than
all that can be brought about by it in favour of any inclination,
nay even of the sum total of all inclinations. Even if it should
happen that, owing to special disfavour of fortune, or the
niggardly provision of a step-motherly nature, this will should
wholly lack power to accomplish its purpose, if with its greatest
efforts it should yet achieve nothing, and there should remain only
the good will (not, to be sure, a mere wish, but the summoning of
all means in our power), then, like a jewel, it would still shine
by its own light, as a thing which has its whole value in itself.
Its usefulness or fruitlessness can neither add nor take away
anything from this value. It would be, as it were, only the setting
to enable us to handle it the more conveniently in common commerce,
or to attract to it the attention of those who are not yet
connoisseurs, but not to recommend it to true connoisseurs, or to
determine its value.There is, however, something so strange in this idea of the
absolute value of the mere will, in which no account is taken of
its utility, that notwithstanding the thorough assent of even
common reason to the idea, yet a suspicion must arise that it may
perhaps really be the product of mere high-flown fancy, and that we
may have misunderstood the purpose of nature in assigning reason as
the governor of our will. Therefore we will examine this idea from
this point of view.