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256
Chapter 15
Here the demand to take account of the objective dialectic in studying the
subjective dialectic, i.e., dialectical thinking in some science, is clearly expressed.
Of course, by no means does this imply that we close our eyes to the subjective
conditions of this thinking. The same Engels who established a correspondence be-
tween being and thinking in mathematics says that “all laws of number are depend-
ent upon and determined by the system that is used. In the binary and ternary
system 2
x
2 does not
=
4, but
=
100
or
=
11” [ibid., p.
523].
Extending this, we
might say that subjective assumptions which follow from knowledge will always in-
fluence the way of expressing the laws of nature and the relation between the dif-
ferent concepts. We must take them into account, but always as a reflection of the
objective dialectic.
We must, therefore, contrast epistemological critique and formal logic as the
foundations of a general science with a dialectic “which is conceived of as the sci-
ence of the most general laws of
all
movement. This implies that its laws must be
valid for both movement in nature and human history and movement in thinking”
[ibid., p.
530].
This means that the dialectic of psychology—this is what we may
now call the general psychology in opposition to Binswanger’s definition of a “cri-
tique of psychology”—is the science of the most general forms of movement (in
the form of behavior and knowledge of this movement), i.e., the dialectic of psy-
chology is at the same time the dialectic of man as the object of psychology, just
as the dialectic of the natural sciences is at the same time the dialectic of nature.
Engels does not even consider the purely logical classification of judgments in
Hegel to be based merely on thinking, but on the laws of nature. This he regards
as a distinguishing characteristic of dialectical logic.
What in Hegel seems a development
of
the judgment as a category of thinking as such,
now appears
to
be a
development of our knowledge of the nature
of
movement based
on
empirical
grounds. And
this proves that the
laws
of thinking
and
the laws of
nature
correspond necessarily with each other as soon as they are
known
properly [ibid., p.
493].
The key to general psychology as a part of dialectics lies in these words: this cor-
respondence between thinking and being in science is at the same time object, high-
est criterion, and even method, i.e., general principle of the general psychology.
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