Art thou pale for weariness <br />Of climbing Heaven, and gazing on the earth, <br /> Wandering companionless <br />Among the stars that have a different birth,-- <br />And ever changing, like a joyless eye <br />That finds no object worth its constancy?<br /><br />Percy Bysshe Shelley<br /><br />http://www.poemhunter.com/poem/fragment-to-the-moon/