Ah! gentle, fleeting, wav'ring sprite,
Friend and associate of this clay!
To what unknown region borne,
Wilt thou now wing thy distant flight?
No more with wonted humour gay,
But pallid, cheerless, and forlorn.

[Animula! vagula, blandula,
Hospes comesque corporis,
Quæ nunc abibis in loca--
Pallidula, rigida, nudula,
Nec, ut soles, dabis jocos?]

George Gordon Byron

http://www.poemhunter.com/poem/adrian-s-address-to-his-soul-when-dying/