He went out
Looking for something his father had not given,
Delights abroad, some foreign ease, something
Vague because distant, which he must give
Himself, something indeed which he carried,
Unknowing, already with him; or, say, an ampler
Body, an assured content, something
Which, unknowing, he was leaving behind, yet
Which he had to leave to be able to find.
--W. S. Merwin, from "The Prodigal Son"