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Then Apollonides taking up the discourse, and asking what that opinion of Clearchus was; It would more, said I, beseem any man than you to be ignorant of this discourse, as being grounded on the very fundamental principles of geometry. For he affirms, that what we call a face, is the image and figure of the great ocean, represented in the moon as in a mirror. For the circumference of a circle, when it is reflected back,See the account of various ancient doctrines of vision and the reflection of light in the treatise on the Opinions of Philosophers, Book IV. Chapters 13 and 14. The idea that vision was caused by something proceeding from the eye to the object is especially to be noticed. (G.) is wont in many places to touch objects which are not seen in a direct line. And the full moon is for evenness and lustre the most beautiful and purest of all mirrors. As then you hold, that the heavenly bow appears, when the ray of light is reflected back towards the sun, in a cloud which has got a little liquid smoothness and consistence; so, said he, there is seen in the moon the surface of the sea, not in the place where it is situated, but from whence the reflection gives a sight of it by its reverberated and reflexed light, as Agesianax again says in another passage, This flaming mirror offers to your eyes The vast sea’s figure, as beneath it lies Foaming with raging billows.
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Apollonides therefore, being delighted with this, said. A singular opinion indeed is this of his, and (to speak in a word) strangely and newly invented by a man sufficiently presumptuous, but not void of learning and wit. But how, I pray, was it refuted?
