The Complete Works of Claudius Galen, Vol. 18 Pt. 2

...or anything else expressed by the voice, which has not been known by the soul. But if they would not wish to call it “known,” they will at least call it “conjectured,” so that it may have preceded in the soul of the one who predicts, if not a foreknowledge, then at least a fore-conjecture. However, the Greeks do not use the term “fore-conjecture,” just as the followers of Herophilus themselves do not, even though they use very many barbarisms. Therefore, either let them legislate that something be called “fore-conjecture” which is distinct from “foreknowledge,” at the same time persuading men to accept their legislation, or, if they are unable to do this, let them understand the meanings of names as is customary. For it is customary for the hope that is held for the most part concerning future events, and indeed that which is reliable, to be called foreknowledge. But it is the work of good physicians not to seek such things, but rather how the one who predicts what will happen to the sick may most often succeed, and rarely fail. For while the expression is one and is used for the most part, there exists a very great difference in the facts according to...

...known, or to declare anything by voice which he has not previously perceived in his mind. But if they should not wish to call it “known,” they will surely call it doxazomenon, that is, “conjectured,” in such a way, however, that it has first existed in the mind of the predictor, and if not a foreknowledge, then at least a prodoxasis—that is, if it be permitted to say so, a “fore-conjecture”—a name, however, that the Greeks do not seem ever to have used, just as Herophilus himself did not, even though he speaks with much barbarism. Therefore, let him either impose that term prodoxasis, so that it may signify something different from foreknowledge and at the same time persuade men to accept this new name, or, if he cannot accomplish this, let him understand the significations of names and admit those already received by long usage. For it is customary and accepted that the hope which is held for the most part concerning future events, and specifically that which is reliable, is called foreknowledge. Indeed, it does not befit an excellent physician to be detained by inquiring into such matters, but rather to devise a method by which he who predicts the future for the sick may often speak the truth and rarely err. This, indeed, is the one expression by which it is said...