A woman's chastity consists, like an onion, of a series of coats. You may strip off the outer ones without doing much mischief, perhaps none at all ; but you keep taking off one after another, in expectation of coming to the inner nucleus, including the whole value of the matter. It proves, however, that there is no such nucleus, and that chastity is diffused through the whole series of coats, is lessened with the removal of each, and vanishes with the final one which you supposed would introduce you to the hidden pearl.
