"For all the gold that is beneath the moon, Or ever has been, of these weary souls Could never make a single one repose"

(Canto 7, lines 64-66)

Some commentators augment the meaning of this passage to say that not all the gold in the world is enough relieve any soul at all from continuous suffering - anyway, for a gloss to these lines, see the Convivio book 4 chapter 12.