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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: blood changes its nature it can be rarefied by the warmth of the heart, in
a higher or lower degree, and more or less quickly than before? And if it
be inquired how this heat is communicated to the other members, must it
not be admitted that this is effected by means of the blood, which,
passing through the heart, is there heated anew, and thence diffused over
all the body? Whence it happens, that if the blood be withdrawn from any
part, the heat is likewise withdrawn by the same means; and although the
heart were as-hot as glowing iron, it would not be capable of warming the
feet and hands as at present, unless it continually sent thither new
blood. We likewise perceive from this, that the true use of respiration is
to bring sufficient fresh air into the lungs, to cause the blood which
Reason Discourse |
