After Wolff's huge
works on logic and ontology, his Cosmologia generalis
feels refreshingly short with its under five hundred pages. The
shortness of the book might also reflect
its lack of importance in the purely philosophical part of Wolffian
system. Wolff's cosmology works mostly as an introduction to general
natural science or physics and is thus firmly connected with Wolff's
more empirical studies. Then again, of other parts of metaphysics
only theology is essentially said to be based on cosmology, because
Wolff argues for the existence of God from the existence of a certain
type of universe.
The
topic of Wolffian cosmology is then world or universe and general
types of objects in it. The very existence of universe is not so much
proven by pure reasoning,
but assumed – or at least the existence of a universe is justified
by certain empirical observations we have. What
we actually perceive or observe are certain things – rocks, trees,
houses and such. Now, all of
these entities are finite, that is, their existence requires a number
of other entities, either existing at the same time (like trunk
supports
branches) or existing before them (like rain requires gathering of
clouds).
As they say, no smoke without fire. |
The
entities we observe are then connected to various other entities in
space and time through causal influences. These intricate relations
form a kind of web or nexus, in which one thing can be connected to
any other thing of the nexus through a string of causal relations. A
totality of such interconnected spatio-temporal things is then a world
or a universe. There might be different possible universes, because a
number of possible strings of events might have occurred, but only
one of them truly has occurred, that is, the string of events
constituting the history of our world.
I
have investigated the nature of this Wolffian universe in quite a
detail earlier,
but there's no harm in going through it all again. World is a
composite of things, and as a composite, its nature is dictated by
the nature of its parts. Thus, Wolff concludes, if we replaced just one peck of sand, the
world would be completely different, because its identity is
determined by the very entities constituting it.
Now,
in the actual universe,
all things we happen to
observe are composite substances, that is, they consist of other
things and what they are or their essence is determined by their
constituents. If we then want to change these substances, we must
essentially change their constitution, that is, remove some parts or
add other (for instance, if we want to make blackened metal objects
shiny, we must remove all the grime on the surface of the objects),
or then we can change the way they happen to move at the moment. All
these changes require then direct contact with the object to be
changed: you cannot pluck something out, if you are not close enough.
In effect, this means that world and all the composite objects that
we observe can be changed only through motion that comes in contact
with what is to be changed. Wolff can thus add that the world is like
a machine or a perfect watch which remains in action, even if its
creator fails to wind it.
As
we have mentioned number of times,
Wolff does not think that his account of world could be called
necessary in the strict sense of the word. Indeed, it is easy to see
that even if we could explain all the events of a current day, we
would be forced to explain them by referring all of them to past
events, which would then be completely unexplained and required a new
explanation. At the end, these events would be necessary in the
strict sense, only if no
other series of events would be even conceivable, which
is clearly not so.
Then
again, Wolff also claims that
worldy events are not completely inexplicable facts. Indeed,
this non-explicability of some facts
should be contradicted even by the principle of sufficient reason,
which states that all
contingent things and events arise out of some more primary things
and events. In case of universe, these primary things and events are
movements of material bodies, which with machine-like predictability
leads to further things and events. This deterministic view of
universe does not completely cancel the non-necessity of the worldly events, because a deterministic series as a whole is not necessitated by anything,
This is enough for
the Wolffian scheme of macrocosmos, next time I'll take a look of
what he has to say on microcosmos, that is, bodies and their parts.
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