I could see by his manner that he had stronger reasons for satisfaction than his words alone would imply.
To carry the art, however, to its highest pitch, it is necessary that the reasoner should be able to utilise all the facts which have come to his knowledge; and this in itself implies, as you will readily see, a possession of all knowledge, which, even in these days of free education and encyclopaedias, is a somewhat rare accomplishment.
There are no more uses of "imply" in the book.
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She wouldn’t make a direct statement, but she implied that she supported our position.