Περὶ τοῦ ἐμφαινομένου προσώπου τῷ κύκλῳ τῆς σελήνης

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İngilizce İngilizce Yunanca

23 But this, said I, seems rather to refute and check the reflection and reverberation which is said to rebound from the moon; because those who are within retorted rays do not only see that which is enlightened, but also that which enlightens. For when, at the resulting of light from water upon a wall, the sight falls upon the place which is thus illuminated by the reflection, the eye there beholds three things, to wit, the ray or light that is driven back, the water which makes the reflection, and the sun himself, whose light, falling on the superficies of the water, is repulsed and sent back. This being confessed, as what is evidently seen, it is required of those who say that the earth is enlightened from the moon by the reflections of the sun’s rays upon it, that they show us by night the sun appearing upon the superficies of the moon, in the same manner as he may be seen by day appearing in the water on which he shines when there is the said reflection of his beams. But since the sun does not so appear, they thence infer that the moon receives her illumination by some other means, and not by reflection; and if there is no reflection, the moon then is not earth.

23 What answer then is to be made them, said Apollonides? For the argument of this objection against reflection is common also to us.