Conscience is the judging faculty of the heart.
We must realize that the conscience approves us when we do what we have been taught as right and condemns us when we do what violates what we have been taught is right. This showed that one can reject standards of right so long that his conscience will not hurt him any more when he does things contrary to the right. The conscience is not a safe guide in religion. There is a way which seemeth right unto a man, but the end thereof are the ways of death. Man was created upright but he sought out many inventions.