What is Winston's most dominant characteristic in 1984?

I tend to think that there are two strongly defining
characteristics of Winston.  On one hand, I think his normalcy and his "anyman" quality
is undeniable.  Orwell's giving him the most common last name of "Smith" helps to bring
this out.  Yet, it lies in Winston's most basic tenets.  Flashbacks of his past, the
desire to seek rebellion on the smallest and largest levels, as well as the
consciousness that seeks more than what is present helps to bring out the fact that
Winston is really no different than anything else.  It seems to be a statement that he
is the hero of  the novel, the person in which the hopes for change rest.  There is
nothing extraordinary about him and this is what makes him perfect for us, the reader,
to place our desires for change.  Along these lines, I think that his authenticity is
probably another dominant trait.  Winston is genuine about his disdain for Big Brother,
his desire to be a voice of dissent, and his feelings.  This is probably why he fails to
recognize O'Brien's duplicity.