"I know what people are murmuring: 'Suppose', they remark, 'that everyone sought to abstain from all intercourse? How would the human race survive? I only wish that this was everyone's concern so long as it was uttered in charity, 'from a pure heart, a good conscience, and faith unfeigned'; then the city of God would be filled much more speedily, and the end of the world would be hastened."