In Lois Lowry's book, The Giver, explain how the author uses the character to explore the conflict.

The title character of The Giver,
first known as the "Receiver" shows conflict with his knowledge.  He is the only one in
the community who can seen the frivolity and violation that the community creates.  It
is his job to defend the community, but with his iknowledge he knows that it is wrong. 
Until Jonas, he is the only conflicted character currently living in the community.  He
has dual knowledge.

This is evidenced when he angrily
declares to Jonas:"They know Nothing!" when referring to the
Elders.  Of course, earlier Rosemary had a similar conflict, but her knowledge caused
her to ask for release and her suicide.  It is this conflict that causes him to agree to
help Jonah plan his escape.