“Jealousy never arises where love is built up on true virtue, and therefore it is a sure sign of an earthly, sensual love, in which mistrust and inconstancy is soon infused. It is a sorry kind of friendship which seeks to strengthen itself by jealously; for though jealousy may be a sign of strong, hot friendship, it is certainly no sign of a good, pure, perfect attachment; and that because perfect love implies absolute trust in the person loved, whereas jealousy implies uncertainty.”
