The Only Use of

conscience
in
Henry IV, Part 2

But a good conscience will make any possible satisfaction, and so would I. All the gentlewomen here have forgiven me: if the gentlemen will not, then the gentlemen do not agree with the gentlewomen, which was never seen before in such an assembly.†
Scene 5.5

conscience = feeling or appraisal of having personally behaved in a morally right or wrong manner

Definition:

feeling or judgment of morally right or wrong personal behavior