In the quote from Penelope Fitzgerald's "The Blue Flower," the author reflects on the nature of reality and perception. The external world is described as a realm of shadows, suggesting that what we see is merely a distorted reflection of a deeper truth. This metaphor implies that true understanding lies beyond the superficial appearances of the world, and that our reality is shaped by our inner experiences and insights.

Fitzgerald emphasizes an inward journey, suggesting that the key to clarity and perception comes from looking within ourselves. The imagery of light and darkness signifies that enlightenment will reveal the true essence of the universe, which is intrinsically connected to our own consciousness. Ultimately, the quote encourages readers to seek deeper truths beyond mere appearances, promoting a perspective that values introspection and inner exploration.