Poet of Nature, thou hast wept to know
That things depart which never may return:
Childhood and youth, friendship and love's first glow,
Have fled like sweet dreams, leaving thee to mourn.
These common woes I feel. One loss is mine
Which thou too feel'st, yet I alone deplore.
Thou wert as a lone star, whose light did shine
On some frail bark in winter's midnight roar:
Thou hast like to a rock-built refuge stood
Above the blind and battling multitude:

 Shelley seems to be echoing Wordsworth’s own sonnet tribute to Milton in  “London 1802” , in which Wordsworth said of Milton, “"Thy soul was like a Star, and dwelt apart”. As Milton was to Wordsworth, implication is, so Wordsworth was to Shelley, except that Wordsworth has lost his brightness, and has fallen, deserted.
To Wordsworth