When I look at the
massive collection of Wolff's combined works, I get the impression he
might have been a keen business man: after all, it requires a good sales
pitch to get one's writings sold numerous times after the first
print. Furthermore, it is not just the huge amount of reprints, which
makes me consider the possibility, but also the fact that Wolff
essentially made duplicated copies of his works in German and Latin.
The most astonishing example is still Wolff's logic. The German
version of logic was one of Wolff's first publications, but so fond
of the topic Wolff was that he essentially summarised the main ideas
of the book in his German metaphysics and especially in psychological
chapters (after all, cognition is part and parcel of human mental
life) and then years later in his book on morals (naturally, a moral
person has a duty to find out as reliable information as possible). It is
once again the point coinciding with logic I have now hit on Wolff's
Latin psychology. Since I have so recently went through Wolff's Latin
logic in quite a detail, I shall just do a quick summary of Wolff's
ideas of intellect and cognition, especially from a psychological
point of view.
Last time I
described Wolff's notion of intellect as a faculty of distinct ideas.
Although one can have distinct ideas of individual objects, it is
especially universalities Wolff is interested here, because
universalities are an essential ingredient in the more complex forms
of intellectual cognition, that is, making judgements and reasoning
on basis of judgements. I also noted Wolff's distinction between
intuitive cognition based on direct observation of ideas and symbolic
cognition based on language and generally signs and their
manipulation. Wolff notes that this duality continues throughout all
levels of cognition. Thus, we can have direct awareness of a
universal feature shared by a number of entities or we can just refer
to this feature with a general word, we can note a connection between
certain ideas of universal features of we can express this connection
with a string of words and we can use the connections we have observed
to deduce more connections or we can use formal rules of syllogism
and mechanically calculate consequences of certain linguistic
expressions.
The capacity to draw
inferences Wolff calls reasoning, and it is closely related to the
faculty of reason, which is just the capacity to view a whole system
of universal truths and their interconnections. The more pure a
reason is, the less external material it has to use, and pure reason
would observe a system based only on definitions and self-evident
axioms – note that Wolff does not indicate what sciences actually
belong to pure reason, but one would assume that at least mathematics
is a part of it.
Pure reasoning is
then expectedly a form of a priori cognition. In Latin logic Wolff
made it clear that actually all cognition uses reasoning a priori,
that is, also deductions based on experiences. Here Wolff also
explains that all cognition based on experiences is a posteriori,
thus making it possible that cognition is both a priori and a posteriori –
this is what Wolff calls mixed cognition. Wolff is thus beginning to
approach a position in which a priori and a posteriori refer to
components and not types of cognition. We might also note that Wolff
divides experiences and says that a posteriori cognition can be based on active experiments and passive observations, which includes in
addition to sensuous perceptions also apperceptions, thus making
psychology explicitly not part of pure reason.
We might finally
point out that Wolff introduces the notion of an analogy of reason,
which was especially important to Wolff's followers, such as
Baumgarten. Wolff's idea appears to be that as the ideal of reason is
a system of interconnected truths, we might expect that world
conforms to this system in the sense that it is also a system of
interconnected entities. Thus, if some part of nature is known to be
structurised in a certain manner, we have a justification to assume
that some similar part of nature is also structurised in the same
manner.
So much for
theoretical part of the soul, next time we'll start to tackle the
practical side of our nature.