In Act IV of The Crucible, why does Proctor not "name names?"

It at this particular point in the play where John Proctor
ascends into a transcendent realm of great literary characters. It is in this act, in particular
the last scene, where the importance of "name" is important, proving to be one of the lasting
legacies of the drama. Proctor has admitted, albeit in a lie, to seeing witches and being guilty
of witchcraft. Rebecca Nurse is brought in to see this, in the hopes she will follow suit. It is
at this moment when John recognizes his own mistakes and simultaneously his own capacity for
moral greatness. Rebecca is "astonished" that John would do such a thing and John catches this
glimpse of himself in her own eyes. It is through this that when John is forced to "name names,"
he refuses to do so and recants his confession as a lie, guaranteeing his own death. He cannot
name names because it would convict innocent people as well as cause harm to those who remained
true to their own name. John's refusal to name names is actually done to protect others' names.
John is not one to make himself out to be a martyr, but rather he recognizes the need to "make
things right" in a setting where so much is wrong. Someone has to break the moral corruption and
hypocrisy that has taken a hold of Salem. In the first scene of the act, there was ample
discussion of how citizens banded together in Andover when a similar predicament plagued their
community. This might not be as evident in Salem, but John's stance is a hopeful start at
redemption. John recognizes this, which is why Elizabeth ends the drama with her own statement:
“He have his goodness now. God forbid I take it from him!” In a context where there is so little,
"goodness," John's refusal to "name names" in recognition of the importance of name is a starting
point towards redemption.