Abstract: Man is a rational animal. He can think for himself and also for others. He can distinguish good from bad with the help of his reason. All other animals except human beings lead their lives by instinct and that is why they fail to distinguish good and bad. With the help of reason men built up the civilization, scientific discoveries and so on. But in spite of all these human beings are more cruel than other animals. When his rationality is undermined and animality dominates he can go in any length and that is why there are different laws such as, legal laws, moral laws and some other laws which restrict man and help to refrain from doing cruel activities. Above all there are religious fears which also play a great role in the society to keep human beings in their right track.