In D.H. Lawrence's "The Rainbow," the quote "If I were the moon, I know where I would fall down" reflects a deep introspection and desire for belonging. The moon, often seen as a symbol of aspiration and altitude, suggests a yearning for connection with the earth and its inhabitants. This metaphor indicates a longing for a grounded existence despite the lofty nature of one's dreams and ambitions.

The statement encapsulates the emotional struggle between high ideals and the desire for intimacy. It hints at the idea that despite the beauty and mystery of elevation, there is an inherent pull towards understanding one's place in the world. This sentiment resonates throughout the novel, showcasing characters navigating their desires and relationships in search of meaning and fulfillment.