Ah Sun-flower! weary of time,
Who countest the steps of the Sun:
Seeking after that sweet golden clime
Where the traveller's journey is done.
Where the Youth pined away with desire,
And the pale Virgin shrouded in snow:
Arise from their graves, and aspire,
Where my Sun-flower wishes to go.
The desire of the Youth causes him to be restless, wanting what he does not have, leading to his wasting away from lack of fulfillment. 
 Note that the Youth and the Virgin are capitalised, to represent all young people like them who will not attain fulfillment.
Ah Sun-flower