Page:Aristotelous peri psuxes.djvu/79

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CH; II.]
VITAL PRINCIPLE
69

reasonably be expected—for the realising influence exists congenitally in its own subject, while yet potential, and constituted of matter fitted for its agency. It is then manifest, from what has been adduced, that the realising influence and cause can act only upon that which is potentially capable of becoming such or such a reality.