All 4 Uses

conscience
in
A Great and Terrible Beauty
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It's my conscience talking.†
Chpt 7

conscience = feeling or appraisal of having personally behaved in a morally right or wrong manner
But my conscience doesn't have to spend the next two years making inane teatime chatter, bored to the point of catatonia.†
Chpt 7 *
It's probably my guilty conscience coming to call, but the penetrating way she looks at me, I could almost swear she knows what we've done.†
Chpt 30
Do you want that on your conscience?†
Chpt 38

Definitions:

(1) (conscience)
feeling or judgment of morally right or wrong personal behavior
(2) (meaning too rare to warrant focus)