Lewis expands on the idea of supernatural Need-love for God. Because human beings habitually sin, they always need God. But there’s a difference between this kind of bare, natural need and a joyful, loving dependence—the latter “grace” allows people not just to need, but to
desire to need. This accounts for the language of much Christian prayer; being sinners, people are prone to forget how much they need God and need to remind themselves of it in the act of seeking Him.