Final answer:
Aengus's desire to pluck apples in 'The Song of Wandering Aengus' symbolizes an enduring quest for beauty and fulfillment, representing a universal, timeless pursuit of ideals.
Step-by-step explanation:
In the poem "The Song of Wandering Aengus" by William Butler Yeats, Aengus's desire to pluck the apples symbolizes a yearning to capture the ephemeral beauty and the fulfillment of desires that he experienced in his youth.
The "silver apples of the moon" and "golden apples of the sun" convey a quest for something that is just beyond reach, perhaps a quest for everlasting joy, knowledge, or beauty.
This is not merely a reflection of youthful passion or a response to idleness; rather, it’s a deep and enduring aspiration that has driven Aengus to continue seeking throughout his life, symbolizing the timeless human pursuit of ideals and dreams despite the passage of time.