The quote from D.H. Lawrence's "The Rainbow" illustrates the intense dedication and toil that defines the character's existence. It suggests that this individual has poured all of their energy and passion into their work, resulting in their vitality being drained, leaving only a glimmer of life reflected in their eyes. This image evokes a sense of sacrifice and the potential emptiness that can accompany relentless labor.

As the character immerses himself fully in his endeavors, the quote hints at the deeper implications of such a lifestyle. While hard work is often celebrated, it can lead to a loss of emotional connection and fulfillment. Lawrence seems to critique the societal pressure to work tirelessly, prompting readers to consider the balance between ambition and personal well-being.