By making himself the central allusion of the poem, the
speaker is able to
read the passage from "song of myself."
you shall no longer take things at second or third hand, nor
look through the eyes of the dead, nor feed on the spectres
in books,
you shall not look through my eyes either, nor take things
from me,
you shall listen to all sides and filter them from your self.
accuse people of stealing ideas from him.
scold people for spending too much time reading
congratulate people for recycling and reusing things
encourage people to be more independent in their
thinking
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D) encourage people to be more independent in their thinking.

Explanation:

Allusion is a literary device which provides a brief reference to a person/object of historical, cultural or political importance. In this excerpt from Whitman's "Song of Myself", the speaker makes an allusion to himself in the following line: "You shall not look through my eyes either, nor take things from me". The passage introduces a crucial theme in the poem - that we should not accept someone else's experience as universal, but gain our own experience instead.  In the above-mentioned line, Whitman warns the reader that this is also applicable to the viewpoint he presents in the poem - the reader should not believe Whitman either.