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The excerpt represents the core issue or deciding factor on which you must meditate, and is drawn from Reason Discourse by Rene Descartes: humors of the body, beyond saying, that the force with which the blood, in
being rarefied, passes from the heart towards the extremities of the
arteries, causes certain of its parts to remain in the members at which
they arrive, and there occupy the place of some others expelled by them;
and that according to the situation, shape, or smallness of the pores with
which they meet, some rather than others flow into certain parts, in the
same way that some sieves are observed to act, which, by being variously
perforated, serve to separate different species of grain? And, in the last
place, what above all is here worthy of observation, is the generation of
the animal spirits, which are like a very subtle wind, or rather a very
pure and vivid flame which, continually ascending in great abundance from
 Reason Discourse |