the critique of pure reason-第26章
按键盘上方向键 ← 或 → 可快速上下翻页,按键盘上的 Enter 键可回到本书目录页,按键盘上方向键 ↑ 可回到本页顶部!
————未阅读完?加入书签已便下次继续阅读!
other… a relation not of consequence; but of logical opposition; in so
far as the sphere of the one proposition excludes that of the other。
But it contains at the same time a relation of community; in so far as
all the propositions taken together fill up the sphere of the
cognition。 The disjunctive judgement contains; therefore; the relation
of the parts of the whole sphere of a cognition; since the sphere of
each part is a complemental part of the sphere of the other; each
contributing to form the sum total of the divided cognition。 Take; for
example; the proposition; 〃The world exists either through blind
chance; or through internal necessity; or through an external
cause。〃 Each of these propositions embraces a part of the sphere of
our possible cognition as to the existence of a world; all of them
taken together; the whole sphere。 To take the cognition out of one
of these spheres; is equivalent to placing it in one of the others;
and; on the other hand; to place it in one sphere is equivalent to
taking it out of the rest。 There is; therefore; in a disjunctive
judgement a certain community of cognitions; which consists in this;
that they mutually exclude each other; yet thereby determine; as a
whole; the true cognition; inasmuch as; taken together; they make up
the complete content of a particular given cognition。 And this is
all that I find necessary; for the sake of what follows; to remark
in this place。
4。 The modality of judgements is a quite peculiar function; with
this distinguishing characteristic; that it contributes nothing to the
content of a judgement (for besides quantity; quality; and relation;
there is nothing more that constitutes the content of a judgement);
but concerns itself only with the value of the copula in relation to
thought in general。 Problematical judgements are those in which the
affirmation or negation is accepted as merely possible (ad libitum)。
In the assertorical; we regard the proposition as real (true); in
the apodeictical; we look on it as necessary。* Thus the two judgements
(antecedens et consequens); the relation of which constitutes a
hypothetical judgement; likewise those (the members of the division)
in whose reciprocity the disjunctive consists; are only problematical。
In the example above given the proposition; 〃There exists perfect
justice;〃 is not stated assertorically; but as an ad libitum
judgement; which someone may choose to adopt; and the consequence
alone is assertorical。 Hence such judgements may be obviously false;
and yet; taken problematically; be conditions of our cognition of
the truth。 Thus the proposition; 〃The world exists only by blind
chance;〃 is in the disjunctive judgement of problematical import only:
that is to say; one may accept it for the moment; and it helps us
(like the indication of the wrong road among all the roads that one
can take) to find out the true proposition。 The problematical
proposition is; therefore; that which expresses only logical
possibility (which is not objective); that is; it expresses a free
choice to admit the validity of such a proposition… a merely arbitrary
reception of it into the understanding。 The assertorical speaks of
logical reality or truth; as; for example; in a hypothetical
syllogism; the antecedens presents itself in a problematical form in
the major; in an assertorical form in the minor; and it shows that the
proposition is in harmony with the laws of the understanding。 The
apodeictical proposition cogitates the assertorical as determined by
these very laws of the understanding; consequently as affirming a
priori; and in this manner it expresses logical necessity。 Now because
all is here gradually incorporated with the understanding… inasmuch as
in the first place we judge problematically; then accept
assertorically our judgement as true; lastly; affirm it as inseparably
united with the understanding; that is; as necessary and apodeictical…
we may safely reckon these three functions of modality as so many
momenta of thought。
*Just as if thought were in the first instance a function of the
understanding; in the second; of judgement; in the third; of reason。 A
remark which will be explained in the sequel。
SECTION III。 Of the Pure Conceptions of the Understanding; or
Categories。 SS 6
General logic; as has been repeatedly said; makes abstraction of all
content of cognition; and expects to receive representations from some
other quarter; in order; by means of analysis; to convert them into
conceptions。 On the contrary; transcendental logic has lying before it
the manifold content of a priori sensibility; which transcendental
aesthetic presents to it in order to give matter to the pure
conceptions of the understanding; without which transcendental logic
would have no content; and be therefore utterly void。 Now space and
time contain an infinite diversity of determinations of pure a
priori intuition; but are nevertheless the condition of the mind's
receptivity; under which alone it can obtain representations of
objects; and which; consequently; must always affect the conception of
these objects。 But the spontaneity of thought requires that this
diversity be examined after a certain manner; received into the
mind; and connected; in order afterwards to form a cognition out of
it。 This Process I call synthesis。
By the word synthesis; in its most general signification; I
understand the process of joining different representations to each
other and of comprehending their diversity in one cognition。 This
synthesis is pure when the diversity is not given empirically but a
priori (as that in space and time)。 Our representations must be
given previously to any analysis of them; and no conceptions can
arise; quoad their content; analytically。 But the synthesis of a
diversity (be it given a priori or empirically) is the first requisite
for the production of a cognition; which in its beginning; indeed; may
be crude and confused; and therefore in need of analysis… still;
synthesis is that by which alone the elements of our cognitions are
collected and united into a certain content; consequently it is the
first thing on which we must fix our attention; if we wish to
investigate the origin of our knowledge。
Synthesis; generally speaking; is; as we shall afterwards see; the
mere operation of the imagination… a blind but indispensable
function of the soul; without which we should have no cognition
whatever; but of the working of which we are seldom even conscious。
But to reduce this synthesis to conceptions is a function of the
understanding; by means of which we attain to cognition; in the proper
meaning of the term。
Pure synthesis; represented generally; gives us the pure
conception of the understanding。 But by this pure synthesis; I mean
that which rests upon a basis of a priori synthetical unity。 Thus; our
numeration (and this is more observable in large numbers) is a
synthesis according to conceptions; because it takes place according
to a common basis of unity (for example; the decade)。 By means of this
conception; therefore; the unity in the synthesis of the manifold
becomes necessary。
By means of analysis different representations are brought under one
conception… an operation of which general logic treats。 On the other
hand; the duty of transcendental logic is to reduce to conceptions;
not representations; but the pure synthesis of representations。 The
first thing which must be given to us for the sake of the a priori
cognition of all objects; is the diversity of the pure intuition;
the synthesis of this diversity by means of the imagination is the
second; but this gives; as yet; no cognition。 The conceptions which
give unity to this pure synthesis; and which consist solely in the
representation of this necessary synthetical unity; furnish the
third requisite for the cognition of an object; and these
conceptions are given by the understan