Page:O. F. Owen's Organon of Aristotle Vol. 1 (1853).djvu/94

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the principle of the existence, or of the non-existence of all things, and we should consider other things as consequent upon these. Hence from what we have stated, it is clear that whatever exists of necessity, is in energy, so that if eternal natures are prior in existence, energy also is prior to power, and some things, as the first substances, are energies without power, but others with power, namely, those which are prior by nature, but posterior in time: lastly, there are some which are never energies, but are capacities only.

Chapter 14

But whether is affirmation contrary to negation, or affirmation to affirmation? and is the sentence