Paradise Lost, Book VIII, 85–97
Already by thy reasoning this I guess, Who art to lead thy offspring, and supposest That bodies bright and greater should not serve The less not bright, nor Heaven such journeys run, Earth sitting still, when she alone receives The benefit: Consider first, that great Or bright infers not excellence: the Earth Though, in comparison of Heaven, so small, Nor glistering, may of solid good contain More plenty than the sun that barren shines; Whose virtue on itself works no effect, But in the fruitful Earth; there first received, His beams, unactive else, their vigour find.