the critique of pure reason-第53章
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and extinction; cannot itself (in the sphere of phenomena) arise and
pass away; is a sound and safe conclusion; a conclusion which leads us
to the conception of empirical necessity and permanence in
existence; and consequently to the conception of a substance as
phenomenon。
When something happens; the mere fact of the occurrence; without
regard to that which occurs; is an object requiring investigation。 The
transition from the non…being of a state into the existence of it;
supposing that this state contains no quality which previously existed
in the phenomenon; is a fact of itself demanding inquiry。 Such an
event; as has been shown in No。 A; does not concern substance (for
substance does not thus originate); but its condition or state。 It
is therefore only change; and not origin from nothing。 If this
origin be regarded as the effect of a foreign cause; it is termed
creation; which cannot be admitted as an event among phenomena;
because the very possibility of it would annihilate the unity of
experience。 If; however; I regard all things not as phenomena; but
as things in themselves and objects of understanding alone; they;
although substances; may be considered as dependent; in respect of
their existence; on a foreign cause。 But this would require a very
different meaning in the words; a meaning which could not apply to
phenomena as objects of possible experience。
How a thing can be changed; how it is possible that upon one state
existing in one point of time; an opposite state should follow in
another point of time… of this we have not the smallest conception a
priori。 There is requisite for this the knowledge of real powers;
which can only be given empirically; for example; knowledge of
moving forces; or; in other words; of certain successive phenomena (as
movements) which indicate the presence of such forces。 But the form of
every change; the condition under which alone it can take place as the
coming into existence of another state (be the content of the
change; that is; the state which is changed; what it may); and
consequently the succession of the states themselves can very well
be considered a priori; in relation to the law of causality and the
conditions of time。*
*It must be remarked that I do not speak of the change of certain
relations; but of the change of the state。 Thus; when a body moves
in a uniform manner; it does not change its state (of motion); but
only when all motion increases or decreases。
When a substance passes from one state; a; into another state; b;
the point of time in which the latter exists is different from; and
subsequent to that in which the former existed。 In like manner; the
second state; as reality (in the phenomenon); differs from the
first; in which the reality of the second did not exist; as b from
zero。 That is to say; if the state; b; differs from the state; a; only
in respect to quantity; the change is a coming into existence of b …
a; which in the former state did not exist; and in relation to which
that state is = O。
Now the question arises how a thing passes from one state = a;
into another state = b。 Between two moments there is always a
certain time; and between two states existing in these moments there
is always a difference having a certain quantity (for all parts of
phenomena are in their turn quantities)。 Consequently; every
transition from one state into another is always effected in a time
contained between two moments; of which the first determines the state
which leaves; and the second determines the state into the thing
passes。 the thing leaves; and the second determines the state into
which the thing Both moments; then; are limitations of the time of a
change; consequently of the intermediate state between both; and as
such they belong to the total of the change。 Now every change has a
cause; which evidences its causality in the whole time during which
the charge takes place。 The cause; therefore; does not produce the
change all at once or in one moment; but in a time; so that; as the
time gradually increases from the commencing instant; a; to its
completion at b; in like manner also; the quantity of the reality
(b … a) is generated through the lesser degrees which are contained
between the first and last。 All change is therefore possible only
through a continuous action of the causality; which; in so far as it
is uniform; we call a momentum。 The change does not consist of these
momenta; but is generated or produced by them as their effect。
Such is the law of the continuity of all change; the ground of which
is that neither time itself nor any phenomenon in time consists of
parts which are the smallest possible; but that; notwithstanding;
the state of a thing passes in the process of a change through all
these parts; as elements; to its second state。 There is no smallest
degree of reality in a phenomenon; just as there is no smallest degree
in the quantity of time; and so the new state of reality grows up
out of the former state; through all the infinite degrees thereof; the
differences of which one from another; taken all together; are less
than the difference between o and a。
It is not our business to inquire here into the utility of this
principle in the investigation of nature。 But how such a
proposition; which appears so greatly to extend our knowledge of
nature; is possible completely a priori; is indeed a question which
deserves investigation; although the first view seems to demonstrate
the truth and reality of the principle; and the question; how it is
possible; may be considered superfluous。 For there are so many
groundless pretensions to the enlargement of our knowledge by pure
reason that we must take it as a general rule to be mistrustful of all
such; and without a thoroughgoing and radical deduction; to believe
nothing of the sort even on the clearest dogmatical evidence。
Every addition to our empirical knowledge; and every advance made in
the exercise of our perception; is nothing more than an extension of
the determination of the internal sense; that is to say; a progression
in time; be objects themselves what they may; phenomena; or pure
intuitions。 This progression in time determines everything; and is
itself determined by nothing else。 That is to say; the parts of the
progression exist only in time; and by means of the synthesis thereof;
and are not given antecedently to it。 For this reason; every
transition in perception to anything which follows upon another in
time; is a determination of time by means of the production of this
perception。 And as this determination of time is; always and in all
its parts; a quantity; the perception produced is to be considered
as a quantity which proceeds through all its degrees… no one of
which is the smallest possible… from zero up to its determined degree。
From this we perceive the possibility of cognizing a priori a law of
changes… a law; however; which concerns their form merely。 We merely
anticipate our own apprehension; the formal condition of which;
inasmuch as it is itself to be found in the mind antecedently to all
given phenomena; must certainly be capable of being cognized a priori。
Thus; as time contains the sensuous condition a priori of the
possibility of a continuous progression of that which exists to that
which follows it; the understanding; by virtue of the unity of
apperception; contains the condition a priori of the possibility of
a continuous determination of the position in time of all phenomena;
and this by means of the series of causes and effects; the former of
which necessitate the sequence of the latter; and thereby render
universally and for all time; and by consequence; objectively; valid
the empirical cognition of the relations of time。
C。 THIRD ANALOGY。
Principle of Coexistence; According to the Law
of Reciprocity or Community。
All substances; in so f