Her boyfriend was trying to eat up her mind, so that then he might enjoy her body. And so it went. But not everyone is interested in moral values, in getting the most out of life.
Cars come with owner's manuals.
By knowing and respecting the car's limits and needs, changing the oil, etc., we can get the most out of it. A driver's license presupposes a knowledge of and respect for traffic laws. Some might view these rules of the road as curtailments on their freedom of travel. But to drive against traffic on the turnpike, or to drive through a blinking railroad crossing, is to imperil our lives, and the lives of others. In like manner, to get the most out of our lives we need to know and respect human limits and needs, to honor the moral values that regulating social intercourse.