wish to derive it from examples. For every example of it that is set
before me must be first itself tested by principles of morality,
whether it is worthy to serve as an original example, i.e., as a
pattern; but by no means can it authoritatively furnish the conception
of morality. Even the Holy One of the Gospels must first be compared
with our ideal of moral perfection before we can recognise Him as
such; and so He says of Himself, "Why call ye Me (whom you see)
good; none is good (the model of good) but God only (whom ye do not
see)?" But whence have we the conception of God as the supreme good?
Simply from the idea of moral perfection, which reason frames a priori
and connects inseparably with the notion of a free will. Imitation
finds no place at all in morality, and examples serve only for
encouragement, i.e., they put beyond doubt the feasibility of what the
law commands, they make visible that which the practical rule
expresses more generally, but they can never authorize us to set aside
the true original which lies in reason and to guide ourselves by
examples.
If then there is no genuine supreme principle of morality but what
must rest simply on pure reason, independent of all experience, I
think it is not necessary even to put the question whether it is
good to exhibit these concepts in their generality (in abstracto) as
they are established a priori along with the principles belonging to
them, if our knowledge is to be distinguished from the vulgar and to
be called philosophical.
In our times indeed this might perhaps be necessary; for if we
collected votes whether pure rational knowledge separated from
everything empirical, that is to say, metaphysic of morals, or whether
popular practical philosophy is to be preferred, it is easy to guess
which side would preponderate.
This descending to popular notions is certainly very commendable, if
the ascent to the principles of pure reason has first taken place
and been satisfactorily accomplished. This implies that we first found
ethics on metaphysics, and then, when it is firmly established,
procure a hearing for it by giving it a popular character. But it is
quite absurd to try to be popular in the first inquiry, on which the
soundness of the principles depends. It is not only that this
proceeding can never lay claim to the very rare merit of a true
philosophical popularity, since there is no art in being
intelligible if one renounces all thoroughness of insight; but also it
produces a disgusting medley of compiled observations and
half-reasoned principles. Shallow pates enjoy this because it can be
used for every-day chat, but the sagacious find in it only
confusion, and being unsatisfied and unable to help themselves, they
turn away their eyes, while philosophers, who see quite well through
this delusion, are little listened to when they call men off for a
time from this pretended popularity, in order that they might be
rightfully popular after they have attained a definite insight.
We need only look at the attempts of moralists in that favourite
fashion, and we shall find at one time the special constitution of
human nature (including, however, the idea of a rational nature
generally), at one time perfection, at another happiness, here moral
sense, there fear of God. a little of this, and a little of that, in
marvellous mixture, without its occurring to them to ask whether the
principles of morality are to be sought in the knowledge of human
nature at all (which we can have only from experience); or, if this is
not so, if these principles are to be found altogether a priori,
free from everything empirical, in pure rational concepts only and
nowhere else, not even in the smallest degree; then rather to adopt
the method of making this a separate inquiry, as pure practical
philosophy, or (if one may use a name so decried) as metaphysic of
morals, * to bring it by itself to completeness, and to require the
public, which wishes for popular treatment, to await the issue of this
undertaking.
* Just as pure mathematics are distinguished from applied, pure
logic from applied, so if we choose we may also distinguish pure
philosophy of morals (metaphysic) from applied (viz., applied to human
nature). By this designation we are also at once reminded that moral
principles are not based on properties of human nature, but must
subsist a priori of themselves, while from such principles practical
rules must be capable of being deduced for every rational nature,
and accordingly for that of man.
Such a metaphysic of morals, completely isolated, not mixed with any
anthropology, theology, physics, or hyperphysics, and still less
with occult qualities (which we might call hypophysical), is not
only an indispensable substratum of all sound theoretical knowledge of
duties, but is at the same time a desideratum of the highest
importance to the actual fulfilment of their precepts. For the pure
conception of duty, unmixed with any foreign addition of empirical
attractions, and, in a word, the conception of the moral law,
exercises on the human heart, by way of reason alone (which first
becomes aware with this that it can of itself be practical), an
influence so much more powerful than all other springs * which may be
derived from the field of experience, that, in the consciousness of
its worth, it despises the latter, and can by degrees become their
master; whereas a mixed ethics, compounded partly of motives drawn
from feelings and inclinations, and partly also of conceptions of
reason, must make the mind waver between motives which cannot be
brought under any principle, which lead to good only by mere
accident and very often also to evil.
* I have a letter from the late excellent Sulzer, in which he asks
me what can be the reason that moral instruction, although containing
much that is convincing for the reason, yet accomplishes so little? My
answer was postponed in order that I might make it complete. But it is
simply this: that the teachers themselves have not got their own
notions clear, and when they endeavour to make up for this by raking
up motives of moral goodness from every quarter, trying to make
their physic right strong, they spoil it. For the commonest
understanding shows that if we imagine, on the one hand, an act of
honesty done with steadfast mind, apart from every view to advantage
of any kind in this world or another, and even under the greatest
temptations of necessity or allurement, and, on the other hand, a
similar act which was affected, in however low a degree, by a
foreign motive, the former leaves far behind and eclipses the
second; it elevates the soul and inspires the wish to be able to act
in like manner oneself. Even moderately young children feel this
impression, ana one should never represent duties to them in any other
light.
From what has been said, it is clear that all moral conceptions have
their seat and origin completely a priori in the reason, and that,
moreover, in the commonest reason just as truly as in that which is in
the highest degree speculative; that they cannot be obtained by
abstraction from any empirical, and therefore merely contingent,
knowledge; that it is just this purity of their origin that makes them
worthy to serve as our supreme practical principle, and that just in
proportion as we add anything empirical, we detract from their genuine
influence and from the absolute value of actions; that it is not
only of the greatest necessity, in a purely speculative point of view,
but is also of the greatest practical importance, to derive these
notions and laws from pure reason, to present them pure and unmixed,
and even to determine the compass of this practical or pure rational
knowledge, i.e., to determine the whole faculty of pure practical
reason; and, in doing so, we must not make its principles dependent on
the particular nature of human reason, though in speculative
philosophy this may be permitted, or may even at times be necessary;
but since moral laws ought to hold good for every rational creature,
we must derive them from the general concept of a rational being. In
this way, although for its application to man morality has need of
anthropology, yet, in the first instance, we must treat it
independently as pure philosophy, i.e., as metaphysic, complete in
itself (a thing which in such distinct branches of science is easily
done); knowing well that unless we are in possession of this, it would
not only be vain to determine the moral element of duty in right
actions for purposes of speculative criticism, but it would be
impossible to base morals on their genuine principles, even for common
practical purposes, especially of moral instruction, so as to
produce pure moral dispositions, and to engraft them on men's minds to
the promotion of the greatest possible good in the world.
But in order that in this study we may not merely advance by the
natural steps from the common moral judgement (in this case very
worthy of respect) to the philosophical, as has been already done, but
also from a popular philosophy, which goes no further than it can
reach by groping with the help of examples, to metaphysic (which
does allow itself to be checked by anything empirical and, as it
must measure the whole extent of this kind of rational knowledge, goes
as far as ideal conceptions, where even examples fail us), we must
follow and clearly describe the practical faculty of reason, from
the general rules of its determination to the point where the notion
of duty springs from it.
Everything in nature works according to laws. Rational beings
alone have the faculty of acting according to the conception of
laws, that is according to principles, i.e., have a will. Since the
deduction of actions from principles requires reason, the will is
nothing but practical reason. If reason infallibly determines the
will, then the actions of such a being which are recognised as
objectively necessary are subjectively necessary also, i.e., the
will is a faculty to choose that only which reason independent of
inclination recognises as practically necessary, i.e., as good. But if
reason of itself does not sufficiently determine the will, if the
latter is subject also to subjective conditions (particular
impulses) which do not always coincide with the objective
conditions; in a word, if the will does not in itself completely
accord with reason (which is actually the case with men), then the
actions which objectively are recognised as necessary are subjectively
contingent, and the determination of such a will according to
objective laws is obligation, that is to say, the relation of the
objective laws to a will that is not thoroughly good is conceived as
the determination of the will of a rational being by principles of
reason, but which the will from its nature does not of necessity
follow.
The conception of an objective principle, in so far as it is
obligatory for a will, is called a command (of reason), and the
formula of the command is called an imperative.
All imperatives are expressed by the word ought [or shall], and
thereby indicate the relation of an objective law of reason to a will,
which from its subjective constitution is not necessarily determined
by it (an obligation). They say that something would be good to do
or to forbear, but they say it to a will which does not always do a
thing because it is conceived to be good to do it. That is practically
good, however, which determines the will by means of the conceptions
of reason, and consequently not from subjective causes, but
objectively, that is on principles which are valid for every
rational being as such. It is distinguished from the pleasant, as that
which influences the will only by means of sensation from merely
subjective causes, valid only for the sense of this or that one, and
not as a principle of reason, which holds for every one. *
* The dependence of the desires on sensations is called
inclination, and this accordingly always indicates a want. The
dependence of a contingently determinable will on principles of reason
is called an interest. This therefore, is found only in the case of
a dependent will which does not always of itself conform to reason; in
the Divine will we cannot conceive any interest. But the human will
can also take an interest in a thing without therefore acting from
interest. The former signifies the practical interest in the action,
the latter the pathological in the object of the action. The former
indicates only dependence of the will on principles of reason in
themselves; the second, dependence on principles of reason for the
sake of inclination, reason supplying only the practical rules how the
requirement of the inclination may be satisfied. In the first case the
action interests me; in the second the object of the action (because
it is pleasant to me). We have seen in the first section that in an
action done from duty we must look not to the interest in the
object, but only to that in the action itself, and in its rational
principle (viz., the law).
A perfectly good will would therefore be equally subject to
objective laws (viz., laws of good), but could not be conceived as
obliged thereby to act lawfully, because of itself from its subjective
constitution it can only be determined by the conception of good.
Therefore no imperatives hold for the Divine will, or in general for a
holy will; ought is here out of place, because the volition is already
of itself necessarily in unison with the law. Therefore imperatives
are only formulae to express the relation of objective laws of all
volition to the subjective imperfection of the will of this or that
rational being, e.g., the human will.
Now all imperatives command either hypothetically or
categorically. The former represent the practical necessity of a
possible action as means to something else that is willed (or at least
which one might possibly will). The categorical imperative would be
that which represented an action as necessary of itself without
reference to another end, i.e., as objectively necessary.
Since every practical law represents a possible action as good
and, on this account, for a subject who is practically determinable by
reason, necessary, all imperatives are formulae determining an
action which is necessary according to the principle of a will good in
some respects. If now the action is good only as a means to
something else, then the imperative is hypothetical; if it is
conceived as good in itself and consequently as being necessarily
the principle of a will which of itself conforms to reason, then it is
categorical.
Thus the imperative declares what action possible by me would be
good and presents the practical rule in relation to a will which
does not forthwith perform an action simply because it is good,
whether because the subject does not always know that it is good, or
because, even if it know this, yet its maxims might be opposed to
the objective principles of practical reason.
Accordingly the hypothetical imperative only says that the action is
good for some purpose, possible or actual. In the first case it is a
problematical, in the second an assertorial practical principle. The
categorical imperative which declares an action to be objectively
necessary in itself without reference to any purpose, i.e., without
any other end, is valid as an apodeictic (practical) principle.
Whatever is possible only by the power of some rational being may
also be conceived as a possible purpose of some will; and therefore
the principles of action as regards the means necessary to attain some
possible purpose are in fact infinitely numerous. All sciences have
a practical part, consisting of problems expressing that some end is
possible for us and of imperatives directing how it may be attained.
These may, therefore, be called in general imperatives of skill.
Here there is no question whether the end is rational and good, but
only what one must do in order to attain it. The precepts for the
physician to make his patient thoroughly healthy, and for a poisoner
to ensure certain death, are of equal value in this respect, that each
serves to effect its purpose perfectly. Since in early youth it cannot
be known what ends are likely to occur to us in the course of life,
parents seek to have their children taught a great many things, and
provide for their skill in the use of means for all sorts of arbitrary
ends, of none of which can they determine whether it may not perhaps
hereafter be an object to their pupil, but which it is at all events
possible that he might aim at; and this anxiety is so great that
they commonly neglect to form and correct their judgement on the value
of the things which may be chosen as ends.
There is one end, however, which may be assumed to be actually
such to all rational beings (so far as imperatives apply to them,
viz., as dependent beings), and, therefore, one purpose which they not
merely may have, but which we may with certainty assume that they
all actually have by a natural necessity, and this is happiness. The
hypothetical imperative which expresses the practical necessity of
an action as means to the advancement of happiness is assertorial.
We are not to present it as necessary for an uncertain and merely
possible purpose, but for a purpose which we may presuppose with
certainty and a priori in every man, because it belongs to his
being. Now skill in the choice of means to his own greatest well-being
may be called prudence, * in the narrowest sense. And thus the
imperative which refers to the choice of means to one's own happiness,
i.e., the precept of prudence, is still always hypothetical; the
action is not commanded absolutely, but only as means to another
purpose.
* The word prudence is taken in two senses: in the one it may bear
the name of knowledge of the world, in the other that of private
prudence. The former is a man's ability to influence others so as to
use them for his own purposes. The latter is the sagacity to combine
all these purposes for his own lasting benefit. This latter is
properly that to which the value even of the former is reduced, and
when a man is prudent in the former sense, but not in the latter, we
might better say of him that he is clever and cunning, but, on the
whole, imprudent.
Finally, there is an imperative which commands a certain conduct
immediately, without having as its condition any other purpose to be
attained by it. This imperative is categorical. It concerns not the
matter of the action, or its intended result, but its form and the
principle of which it is itself a result; and what is essentially good
in it consists in the mental disposition, let the consequence be
what it may. This imperative may be called that of morality.
There is a marked distinction also between the volitions on these
three sorts of principles in the dissimilarity of the obligation of
the will. In order to mark this difference more clearly, I think
they would be most suitably named in their order if we said they are
either rules of skill, or counsels of prudence, or commands (laws)
of morality. For it is law only that involves the conception of an
unconditional and objective necessity, which is consequently
universally valid; and commands are laws which must be obeyed, that
is, must be followed, even in opposition to inclination. Counsels,
indeed, involve necessity, but one which can only hold under a
contingent subjective condition, viz., they depend on whether this
or that man reckons this or that as part of his happiness; the
categorical imperative, on the contrary, is not limited by any
condition, and as being absolutely, although practically, necessary,
may be quite properly called a command. We might also call the first
kind of imperatives technical (belonging to art), the second
pragmatic * (to welfare), the third moral (belonging to free conduct
generally, that is, to morals).
* It seems to me that the proper signification of the word
pragmatic may be most accurately defined in this way. For sanctions
are called pragmatic which flow properly not from the law of the
states as necessary enactments, but from precaution for the general
welfare. A history is composed pragmatically when it teaches prudence,
i.e., instructs the world how it can provide for its interests better,
or at least as well as, the men of former time.
Now arises the question, how are all these imperatives possible?
This question does not seek to know how we can conceive the
accomplishment of the action which the imperative ordains, but
merely how we can conceive the obligation of the will which the
imperative expresses. No special explanation is needed to show how
an imperative of skill is possible. Whoever wills the end, wills
also (so far as reason decides his conduct) the means in his power
which are indispensably necessary thereto. This proposition is, as
regards the volition, analytical; for, in willing an object as my
effect, there is already thought the causality of myself as an
acting cause, that is to say, the use of the means; and the imperative
educes from the conception of volition of an end the conception of
actions necessary to this end. Synthetical propositions must no
doubt be employed in defining the means to a proposed end; but they do
not concern the principle, the act of the will, but the object and its
realization. E.g., that in order to bisect a line on an unerring
principle I must draw from its extremities two intersecting arcs; this
no doubt is taught by mathematics only in synthetical propositions;
but if I know that it is only by this process that the intended
operation can be performed, then to say that, if I fully will the
operation, I also will the action required for it, is an analytical
proposition; for it is one and the same thing to conceive something as
an effect which I can produce in a certain way, and to conceive myself
as acting in this way.