According to Islam, all human beings have been created by the same God and therefore belong to one great brotherhood. So far as their earthly origin is concerned, they are all descendants of the first pair of human beings created by God—Adam and Eve. As they spread over different parts of the world, variations in geographical conditions produced a diversity of stature, skin colours, languages and other racial characteristics. Islam teaches universal brotherhood: despite apparent differences, people should consider others as their brothers and sisters and not harbour no ill-will towards those who are apparently unlike themselves, as differentiating between one man and another is not approved by God. The concept of universal brotherhood in Islam means that one should promote fellow feelings towards others, even if, at first glance, they appear like total strangers to them. They should be each other’s well-wishers and willingly come to one another’s assistance, like members of the same large family. The message of universality of brotherhood calls for one to adopt a broad principle in one’s dealings with others. It is the principle of treating others just as one would like to be treated by them. The Prophet observed, “No one can be a believer until and unless he begins to like for his brother what he likes for himself”. (Sahih al-Bukhari, Hadith No. 13) All individuals are sure about their likes and dislikes. What is required is that they follow the principle that whatever behaviour they want from others, they should themselves according to others. Conversely, whatever behaviour towards themselves they abhor in others should likewise be eschewed by them. This comprehensive principle is helpful in every kind of relationship. It is like a master key to human ethics, one single key which suffices to open all locked doors.