n. motivation deriving logically from ethical or moral principles that govern a person's thoughts and actions
n. conformity to one's own sense of right conduct
n. a feeling of shame when you do something immoral
n. 良心
[法] 良心, 道德感, 正义感
1. He couldn't sleep at night because his conscience was bothering him.
他晚上无法入睡，因为良心在折磨他。
2. She followed her conscience and decided to tell the truth.
她遵循自己的良心，决定说出真相。
3. A clear conscience is the key to a peaceful mind.
清白的良心是内心平静的关键。