Read this excerpt from The Adventures of Robinson Crusoe:
I would be satisfied with nothing but going to sea: and
my inclination to this led me so strongly against the will,
nay, the commands of my father, and against all the
entreaties and persuasions of my mother and other
friends, that there seemed to be something fatal in that
propension of nature, tending directly to the life of misery
which was to befal me.
What is one way in which the antagonist in this passage
contributes to the overall meaning of the story?