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Book VI.
Aristotle's Ethics
151
we know and believe them more, because by reason of them we know also the conclusion following.
Further: the man who is to have the Knowledge which comes through demonstration must not merely know and believe his principles better than he does his conclusion, but he must believe nothing more firmly than the contradictories of those principles out of which the contrary fallacy may be constructed: since he who knows, is to be simply and absolutely infallible.
