"conscience" can u define?????

"Conscience" What a wonderful word. A word which is easy to pronounce,hard to know and follow. But is it enough powerful to live with? Can it be more powerful than money, pwer, or fame? What a question!
One time,I listened to some of my friends talking about that subject. One of them was convenced with the power of conscience. He asked us to look and see any of the prophets; how they refused money, power, and fame only for their messages, only for Allah(The God)
Once he said that I remembered a well-known story of a man called "Al-Samery".That man came and got al the golden coins of some p…