What are some quotes describing Nick Carraway and his purpose in the Great Gatsby?

Becauseis narrating
after the events of the story have taken placehe's thus a first person objective narratorhe has
a perspective on the otherthat we lack because he knows how the story ends. He's not telling it
as it happens, and so we don't learn with him; he tells it later, and so
he's better able to shape the telling of the story so that we like who he likes, sympathize with
who he does, and dislike whoever he thinks is worthy of judgment. For example, in the first
chapter, he tells us whyis "great":

There was
something gorgeous about him, some heightened sensitivity to the promises of life. . . .   [It]
was an extraordinary gift for hope, a romantic readiness such as I have never found in any other
person and which it is not likely I shall ever find again. NoGatsby turned out all right at the
end; it is what preyed on Gatsby, what foul dust floated in the wake of his dreams that
temporarily closed out my interest in the abortive sorrows and short-winded...