Sivananda says : “If an honest man begins to take bribes for the first time, he shudders; for his conscience quivers and trembles; he feels a lot of uneasiness. But if he repeats it again several times, his conscience becomes blunt. He ceases to feel any uneasiness.
If a chaste man visits for the first time a house of ill-fame, his conscience pricks and makes him shudder. But, if he visits that house frequently, his conscience loses its sensitiveness and becomes blunt. He will not feel anything.
Therefore, understanding the fact that the inner mechanism of conscience is very subtle, always try to keep it sensitive, by doing virtuous deeds daily.”