Who hath remov'd me from the mortal world.
But tell, I pray thee, whence the gloomy spots
Upon this body, which below on earth
Give rise to talk of Cain in fabling quaint?"

She somewhat smil'd, then spake: "If mortals err
In their opinion, when the key of sense
Unlocks not, surely wonder's weapon keen
Ought not to pierce thee; since thou find'st, the wings
Of reason to pursue the senses' flight
Are short. But what thy own thought is, declare."

Then I: "What various here above appears,
Is caus'd, I deem, by bodies dense or rare."

She then resum'd: "Thou certainly wilt see
In falsehood thy belief o'erwhelm'd, if well
Thou listen to the arguments, which I
Shall bring to face it. The eighth sphere displays
Numberless lights, the which in kind and size
May be remark'd of different aspects;
If rare or dense of that were cause alone,
One single virtue then would be in all,
Alike distributed, or more, or less.
Different virtues needs must be the fruits
Of formal principles, and these, save one,
Will by thy reasoning be destroy'd. Beside,
If rarity were of that dusk the cause,
Which thou inquirest, either in some part
That planet must throughout be void, nor fed