Unity of plot does not, as some persons think, consist
in the unity of the hero. For infinitely various are the
incidents in one man's life which cannot be reduced to
unity; and so, too, there are many actions of one man
out of which we cannot make one action.
Hence the
error, as it appears, of all poets who have composed a
Heracleid, a Theseid, or other poems of the kind. They
imagine that as Heracles was one man, the story of
Heracles must also be a unity.
But Homer, as in all
else he is of surpassing merit, here too — whether from
art or natural genius — seems to have happily discerned
the truth. In composing the Odyssey he did not include
all the adventures of Odysseus such as his wound on
Parnassus, or his feigned madness at the mustering of
the host incidents between which there was no necessary
or probable connexion: but he made the Odyssey, and
likewise the Iliad, to centre round an action that in our
sense of the word is one.
As therefore, in the other
imitative arts, the imitation is one when the object imitated
is one, so the plot, being an imitation of an action, must
imitate one action and that a whole, the structural union
of the parts being such that, if any one of them is
displaced or removed, the whole will be disjointed and
disturbed. For a thing whose presence or absence makes
no visible difference, is not an organic part of the
whole.
Poetics. Aristotle. S. H. Butcher (Translator). London. 1911.
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