Can somebody explain to me the importance and significance of Giles Corey in The Crucible?

Giles Corey represents the voice of dissent in Salem.  At a time
and moment when so many were either speaking in favor of the conformist majority or when others,
such as Thomas Putnam, were speaking with ulterior motives or agendas, Corey's voice is one that
represented the lone voice of the minority.  While many dismiss him and his voice, Giles Corey is
one of the few people that consistently argues against the "trials" and how the notion of the
accusations are not exercises in spiritual or political justice, but rather manifestations of
self interest.  His refusal to acquiesce to the state of affairs in Salem makes him heroic.  As
with other such figures in the drama, he is made to suffer for such a position.  His demand of
"more weight" is symbolic of how while he may die, his belief in the cause of justice and truth
will endure and that his quest for justice and fairness represented by his state of being will
never die.