Henr. Stephani Dialogus de bene instituendis Graecae linguae studiis

"Which words beginning with the syllable λω are written with an ο?" And having enumerated these words—λόγος, λόγισμος, λογιστής, λόγιος, λογάς, λόγχη, and certain others—he asks which letters ω should be applied to; and when others are brought forward by the one answering, then λώβη (and those derived from it), and λωφᾶν, and λῶπος, as well as λῶρος and λωτός. And entirely similar to that is this one: "Which words beginning with the syllable κη are written with an η?" To which this follows: "Which with an ε?" It is surely wonderful (not to say ridiculous again) that he speaks as if words starting with the syllable χε could be written otherwise than with an ε, and that they are divided into those written with η and those written with ε; and likewise, that those beginning with the syllable κω are distributed into those usually written with the letter ο and those with the letter ω. Moreover, in one and the same place sometimes (to make what I have said clearer), even though he writes some syllable with ο, he speaks of it as if, even though it is so written, it also had an ω. For these are his words: "Of those that begin with the syllable βο, some are written with a small ο, some with a large ω." PH. I seem to have read such things in Eustathius as well. But I do not see what can be said about them (by one who wishes to make excuses) other than this: if they are considered not as written, but merely as pronounced, they might admit an ambiguous spelling. COR. With regard to our own pronunciation, this is said rightly by you, since we confuse the sound of the letter called "small" with the sound of the one called "large"; but who would believe that in the age of Moschopoulos, and even before him in that of Eustathius, these sounds were so confused? PH. Have you read the various little books on the pronunciation of this Greek language, edited together by Henri Estienne a few months ago? COR. Not at all. PH. Once you have read them, doubt will arise for you concerning the pronunciation of that age.