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along about generation, and which impart motions from themselves to those things that are able to receive them, and produce multiform passions in things which are naturally adapted to be copassive. Perfect foreknowledge, however, can never be effected through passion. For that which is itself especially immutable, immaterial, and entirely pure, is accustomed to apprehend the future; but that which is mingled with the most irrational and dark nature of a corporeal-formed and material essence is filled with abundant ignorance. An artificial apparatus, therefore, of this kind does not deserve to be called divination; nor is it proper to bestow much attention upon it, nor to believe in any other person who uses it, as if it possessed in itself a certain clear and known indication of truth. And thus much concerning divination of this kind.
Let us, therefore, now discuss another species of doubts, the cause of which is occult, and which, as you say, is accompanied with "violent threats." But it is variously divided about the multitude of threats. "For it threatens either to burst the heavens, or to unfold the
