Read the passage from "Ode on a Grecian Urn." Fair youth, beneath the trees, thou canst not leave
Thy song, nor ever can those trees be bare;
Bold Lover, never, never canst thou kiss,
Though winning near the goal—yet, do not grieve;
She cannot fade, though thou hast not thy bliss,
For ever wilt thou love, and she be fair!

Which theme does the passage most convey?

Unrequited love is still timeless.
Youth is fleeting and fickle.
Music is the spice of life.
True beauty is found in nature.