[Sidenote 1: _Opt. Astron. c. 7. num. 3._] If there were any light proper to the Moone, then would that Planet appeare brightest when she is eclipied in her Perige, being neerest to the earth, and so consequently more obscure and duskish when she is in her Apoge or farthest from it; the reason is, because the neerer any enlightened body comes to the sight, by so much the more strong are the species and the better perceived. This sequell is granted by some of our adversaries, and they are the very words of noble _Tycho_,[1] _Si luna genuino gauderet lumine, utique cum in umbra terræ esset, illud non amitteret, sed eò evidentiùs exereret, omne enim lumen in tenebris, plus splendet cum alio majore fulgore non præpeditur._ If the Moone had any light of her owne, then would she not lose it in the earths shadow, but rather shine more clearely, since every light appeares greater in the darke, when it is not hindered by a more perspicuous brightnesse. [Sidenote 1: _De nova stella lib. 1. c. 10._] But now the event falls out cleane contrary, (as observation doth manifest, and our opposites themselves doe grant)[1] the Moone appearing with a more reddish and cleare light when she is eclipsed being in her Apoge or farthest distance, and a more blackish yron colour when she is in her Perige or neerest to us, therefore shee hath not any light of her owne. Nor may we thinke that the earths shadow can cloud the proper light of the Moone from appearing, or take away any thing from her inherent brightnesse, for this were to thinke a shadow to be a body, an opinion altogether mis-becomming a Philosopher, as _Tycho_ grants in the fore-cited place, _Nec umbra terræ corporeum quid est, aut densa aliqua substantia, aut lunæ lumen obtenebrare possit, atque id visui nostro præripere, sed est quædam privatio luminis solaris, ob interpositum opacum corpus terræ._ Nor is the earths shadow any corporall thing, or thicke substance, that it can cloud the Moones brightnesse, or take it away from our sight, but it is a meere privation of the Suns light, by reason of the interposition of the earths opacous body. [Sidenote 1: Reinhold _comment. in Purb. Theor. pag. 164._] 2. If shee had any light of her owne then that would in it selfe be, either such a ruddy brightnesse as appeares in the eclipses, or else such a leaden duskish light as wee see in the darker parts of her body, when shee is a little past the conjunction. (That it must be one of these may follow from the opposite arguments) but it is neither of these, therefore she hath none of her owne. 1. ’Tis not such a ruddy light as appeares in eclipses, for then why can wee not see the like rednesse, when wee may discerne the obscurer parts of the Moone? You will say, perhaps, that then the neerenesse of that greater light, takes away that appearance.