*spoilers* Last line of monologue in film? *spoilers*

I don't really have much to add, but I do find it interesting that you figured out it was a line from Ecclesiastes. It certainly does come off as being very pessimistic to me as well. I even thought that perhaps the procession leading him to do "what he came there to do" would be changed into a wedding (since we never saw Sarah's body) as everyone in the town seemed to want to dress him up, but that was not to be.

In a related note, the movie I saw right before this one was The F.B.I. Story starring James Stewart. It also featured a man, a Latin American guide named Mario who always wanted to see the ocean. Mario was shot after saving the life of two FBI agents (or at least preventing them from being imprisoned) and fell off a cliff into a river. James Stewart's character then expressed hope that Chip's body would find the ocean so that he could "see" it. Funny to see two movies in a row that had this thought in them.