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Aristotle - On The Parts Of Animals
Atec Февраль 16 2008 20:01:06
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. Nor is induction required to show this. it is included
in our conception of generation. For generation is a process from a
something to a something; that which is generated having a cause in
which it originates and a cause in which it ends. The originating
cause is the primary efficient cause, which is something already
endowed with tangible existence, while the final cause is some
definite form or similar end; for man generates man, and plant
generates plant, in each case out of the underlying material.)
In order of time, then, the material and the generative process must
necessarily be anterior to the being that is generated; but in logical
order the definitive character and form of each being precedes the
material. This is evident if one only tries to define the process of
formation. For the definition of house-building includes and
presupposes that of the house; but the definition of the house does
not include nor presuppose that of house-building; and the same is
true of all other productions. So that it must necessarily be that the
elementary material exists for the sake of the homogeneous parts,
seeing that these are genetically posterior to it, just as the
heterogeneous parts are posterior genetically to them. For these
heterogeneous parts have reached the end and goal, having the third
degree of composition, in which degree generation or development often
attains its final term
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