What is the evidence of sacrifice in Arthur Miller's The Crucible?

is full of sacrifice. Some sacrifice themselves, some sacrifice
their neighbors, and others sacrifice their principles. One of the most insidious aspects of the
witch-trials is that they make sacrifice of some kind necessary: anyone who is called upon to
make a false confession or die cannot avoid sacrificing something, whether it is life or
truth.

John Proctor declares in act 4 that he is no saint and will have his
life even if it means making a false confession. Yet when he is asked to implicate Rebecca
Nurse, Mary Easty, and Martha Corey, he is prepared to sacrifice his own life rather than
theirs. Deputy-Governor Danforth, in sharp contrast, is always blustering about his integrity
and honesty yet is perfectly prepared to sacrifice justice to expediency. In act 4 he decides to
execute seven people merely because "reprieve or pardon must cast doubt upon the guilt of
them that died till now."

The Reverend Hale is a contrast to Danforth
in that he is willing to sacrifice his...