$02 LOGIC: OR, Tr rÉ RTGBr Cs>i OF REASON. ik a sensation of sonic Weird commotion ¿t animal nature ;r and liereiu it agrees with hunger, thirst, pain; &c. The essential difference of it is, that this commotion arises from a thought or per- èeption of the mind, and hereby it is distinguished front hunger,' thirst, or pain. 2dly, We must coneeive of it cómpletelq, or survey the se- veral parts that compose it. These are (1.) The mind's percep- tion of some object. (2.) The consequent ruffle, or special com- motion of the nerves, and blood, and animal spirits. And (3.) The sensation of this inward commotion. idly, We must consider it comprehensively, in its various properties. The most essential attributes that make up its nature have been already mentioned under the foregoing heads. Some of the most considerable properties that remain are these, namely, That passion belongs to all mankind, in greater or lesser degree's; it is not constantly present with us, but Upon some certan occa- sion ; it is appointed by our Creator for various useful ends and purposes, namely, to give us vigour in the pursuit of what is good and agreeable to us, or in the avoidance of what is hùrtful ; it is very proper for our state of trial in this World ; it is not ut- terly to be rooted out of our nature, but to be moderated and ga4 termed according to the rates of virtue and religion, &c. 4thly, We must take cognizance of the various kinds Of it, Which is balled an extensive conception of it. If the object which the mind perceises be very uncommon it excites the passion of admiration: If the object appear agreeable, it raises love; if the agreeable object be absent and attainable, it is desire; if lrkO- ly to be attained it excites hope; if unattainable despair; if it be present and possessed, it is the passion of joy ; if lost, it ex- cites so, rare ; if the object be disagreeable, it causes in gene- ral hatred, or aversion ; if it be absent and yet we are in danger of it, it raises our fear; if it be present, it is sorrow, and sadness, &c. 5tbly, All these things, and ninny more which go to compose a treatise on this subject must be placed in their proper order ; a slight specimen of which is exhibited in this short account of pas- sion, and which that admirable author Descartes has treated of at large ; though for want of sufficient experiments and obser- vations in natural philosophy, there are some few mistakes in his account of animal nature. SECT. XIII. Au Illustration of these Five Rules by Simi- litudes. TAUS we have brought the first part of Logic to a cbnëfu- lion; and it may not be improper here to represent its excellen- cies (so tar as we have gone) by general hints of its chief design Mid use, as well as by a various comparison Of it to those in <tru- 'meins which ïnankind have invented for their several convenien- ces and improvements.
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