From the essence of each thing some things necessarily follow by I 36 and

From the essence of each thing some things

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From the essence of each thing some things necessarily follow (by I 36 ), and things can produce only what follows necessarily from their nature (by I 29 ). So the power of each thing - that is, the effort by which it (either alone or with others) does anything or tries to do anything - that is (by 6 ) the power or effort by which it tries to stay in existence - is nothing but the actual essence of the thing itself. 8: The effort by which each thing tries to stay in existence involves no finite time, but an indefinite time. If the effort by which a thing tries to stay in existence involved a limited time which fixed how long the thing would last, then that very power by which the thing exists would also imply that it couldn’t exist after that limited time, and it would have to be destroyed. But (by 4 ) this is absurd. So the effort by which a thing exists involves no definite time. On the contrary, since (by 4 ) it will always continue to exist through the same power by which it now exists, unless it is destroyed by an external cause, this effort involves indefinite time. 9: Having clear and distinct ideas and also having confused ones, a mind tries for an indefinite length of time to stay in existence and it is conscious of this effort that it makes. The essence of the mind is constituted by adequate and by inadequate ideas (as I have shown in 3 ). So (by 7 ) it tries to stay in existence both as a possessor of inadequate ideas and as a possessor of adequate ones; and it does this (by 8 ) for an 60
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