We are all aware that we live in a world where diversity is often evoked as a threat and, more particularly, where diversity in the interpretation of a faith can be seen as a sign of disloyalty. This phenomenon is sometimes perceived to apply principally to Muslims, but it also exists in other societies. Absolutist, exclusivist, and rejectionist claims to the truth, especially to religious truth, are increasingly heard from all quarters. Rather than seeing religion as a humble process of growth in faith, some people presume to claim that they have arrived at the end of that journey and can therefore speak with near-divine authority.
Unfortunately, in some parts of the Muslim world today, hostility to diverse interpretations of Islam, and lack of religious tolerance, have become chronic, and worsening, problems. Sometimes these attitudes have led to hatred and violence. At the root of the problem is an artificial notion amongst some Muslims, and other people, that there is, or could ever be, a restricted, monolithic reality called Islam.
Our Ismaili tradition, however, has always accepted the spirit of pluralism among schools of interpretation of the faith, and seen this not as a negative value, but as a true reflection of divine plenitude. Indeed, pluralism is seen as essential to the very survival of humanity. Through your studies you have known the many Qur’anic verses and hadiths of our beloved Prophet Muhammad (peace be upon him) that acknowledge and extol the value of diversity within human societies. You all know, I am sure, the hadith to the effect that differences of interpretation between Muslim traditions should be seen as a sign of the mercy of Allah.
~ excerpt from a speech by Prince Rahim Aga Khan at the Institute of Ismaili Studies in 2007.