I have already investigated Wolff's
views on understanding in a series of
texts based on his German logic.
Hence, I shall ignore familiar details in Wolff's account of
understanding in German metaphysics – such as the levels of clarity
in concepts – and instead focus on presenting a general account of
understanding in Wolff.
According to Wolff, the faculty of
understanding is based on something more active than mere passive
sensibility: the idea of an active understanding will be developed in more detail by Kant and
the later German idealists. The particular activity Wolff is speaking
of is the capacity of concentrating one's attention (Aufmerkung)
to a certain thought: this thought will then become clearer than all
the other current thoughts. In other words, we cannot decide that we
are seeing a bunch of trees, a rock and an ant hill in front of us,
but we can choose to ignore everything else and look at the anthill
more carefully – or we can even forget all the information given to
us by senses and recollect the football match of the previous night.
Through the capacity of changing and
concentrating our attention, we can go through even an object with a
complex and multifaceted structure (Wolff calls this ability
überdenken). Then
again, we can also recognise through our memory that a certain
complex structure is something we have been earlier aware of. A
thought of a general structure repeating itself in various situations
is what Wolff calls concepts (Begriff).
What Wolff is describing here is a process of abstraction: one
compares different situations and notes they share some complex of
characteristics and so one is able to think of the general notion of
having such a complex.
As we
might remember from Wolffian logic, distinct concepts are such that
we can define, and when we think of something through a distinct
concept, we understand it (verstehen): similarly,
the capacity to think or cognise some possible thing through distinct
concepts is understanding (Verstand).
In other words, understanding uses the results of analysis in order to
see what there might be. We may note in passing how this Wolffian
notion of understanding as the capacity of using distinct concepts will be changed by later philosophers. For Kant, understanding becomes a source
of certain concepts – namely, categories – while in Hegel, the
understanding is finally the source for all concepts, that is, the
very act of analysing and abstracting that creates all general
concepts.
When the human understanding thinks or
cognises a thing, it makes judgments. That is, the understanding
represents the thing as having certain characteristics, although
at the same time it is aware that the thing and its characteristics
cannot be identified, because e.g. redness is something that is not
restricted to berries. This rather awkward definition of judgement is
essentially retained by later German philosophers.
Note how the capacity of judgment is
here seen as a mere modification of the general capacity of
understanding. Indeed, because the faculty of understanding is not
the source, but the application of concepts with Wolff, it is natural
to equate understanding with the capacity for making judgments. With
Kant and the later German idealists the identification is not
self-evident, because understanding is already a faculty for making
concepts: in some cases they appear to follow Wolff, but in other
cases they appear to distinguish judgement as a separate faculty.
The judgements are then mental
processes, but they can also be translated into verbal form through
use of words. Wolff undertakes an investigation of grammar that need
not concern us. What is important, instead, is that Wolff
distinguishes between what he calls intuitive (anschauende) and
figurative (figürlich) cognition. This distinction is nearest
Wolff comes to separating intuition and understanding. Still Wolffian
distinction is not a distinction between constituents of experience,
but more one between different types of experiences, in which
different consituents preponderate.
In intuitive cognition one is thinking
directly a thing appearing to our senses: this is what happens when
we perceive or imagine things. Intuitive cognition is
characteristically limited to individual things – we cannot see,
for instance, a triangle in general, but only individiual triangles.
In figurative cognition, on the other hand, we do not investigate
things as such, but only signs referring to those things. The most
common of these signs are probably words, but Wolff also recognises
the importance of mathematical symbols. The figurative cognition is
in a sense based on the intuitive knowledge, because the words and
the symbols must refer to general characteristics of individual
things. Yet, it is the figurative cognition that has more value for Wolff, because
it allows us to cognise general structures.
The difference between
sensation/intuitive cognition and understanding/figurative cognition
is reproduced in a higher level in the difference between experience
and reason (
Vernunft), which were the two recognised sources of knowledge in the
premodern philosophy. We have seen in
an earlier text that Wolff was not a pure rationalist, and indeed, accepted as a
valid source of knowledge the experience, that is, cognition based on
perceptions and observation of mental processes (note that Wolff
included both passive observations and active experiments under
experiences). Experiences can tell us, Wolff suggests, that our
concepts refer to possible structures (we know there can be flying
machines, because we have seen them) and that certain connections
between concepts or judgements are valid. Finally, because we can see
that certain judgments are valid only in certain contexts where
determinate conditions hold, experiences can provide information
about causal connections.
The problem in taking experience as the
only source of knowledge is that experience can only tell that
something is the case. At best, experiences can be generalised
through analogies of the sort ”this has happened before in these
circumstances, hence, it must happen always in similar
circumstances”. Yet, even such generalisations do not tell why
something is the case. Explaining a truth means for Wolff connecting
it to other truths in a systematic manner: we understand why e.g.
apples fall toward Earth by seeing how it follows from more
primordial truths of physics. Wolff begins the tradition of calling
the capacity for such systematics reason – a tradition
continued by Kant and the later German idealists.
Later German classics usually
distinguished reason and understanding – either they thought, like
Kant, that reason was emptier of content than understanding, or they
disparaged understanding for its incapacity of reaching the level of
reason, like Schelling. But for Wolff, reason is just another
modification of understanding, just like capacity of judgment is.
More precisely, reason is in Wolff a capacity for using formal
deductions to connect judgements. Note that the connection between
reason and reasoning or deduction is something German idealists also
accepted, although the formalism of reason will be rather difficult
to combine with the more substantial notion of reason in later German
idealists. Hegel in fact went so far as to call the reason as formal
reasoning the reason in the guise of understanding – we might call
this a partial return to Wolff's original notion of reason as a
species of understanding.
We might finally note that the
reasoning in Wolff is not limited to mere Aristotelian syllogistic.
One might remember from
an earlier post that Wolff supposed judgements have different levels of certainty.
Wolff also notes that reasoning might be applied not just to certain
truths, but also to judgements of uncertain nature. Wolff is thus
envisioning a logic of probabilities, whereby we could deduce e.g.
from almost certain judgements other almost certain judgements.
The hierarchy of
senses/intuition/perception, imagination and
understanding/judgement/reason is something that is faithfully
followed by later German philosophers and taken almost as a universal
truth of human consciousness. Despite the seeming perfection of the
threefold scheme, Wolff himself notes that the nature of the human
soul might not be exhausted by it. Indeed, the scheme deals only with
different types of thinking or consciousness. Then again,
consciousness might be only an external criterion for recogning one
as a human soul and it might not tell the whole story of the essence
of the humans. Indeed, human affections, pleasures and pains are
something that is not reducible to theoretical capacities of
cognition. We shall investigate in next post what Wolff has to say about this other side of human soul.