The quote reflects the protagonist's growing appreciation for literary elements, particularly elms, as well as a specific poem by Joyce. It suggests a deeper connection and resonance with themes of nature and human experiences. His enjoyment hints at an evolving understanding of the richness embedded in literature.
In this context, the mention of "arbors and ardors and Adas" indicates a fondness for complexity and beauty within life and art. The character's journey through Nabokov's narrative seems to involve embracing these intricacies, which enhances his appreciation for both the natural world and literary expression.