How is the future of the world according to various schools of thought? If the future were positive then under what circumstances would it take shape? In other words, how would be its leadership? What does Islam say in this regards? And what is the basis of the belief in positive future in Islam? Who is the saviour of the future? Is he known and specific individual or anybody bringing reform would be the Mahdi? How is the history of birth and personal life of this saviour? What does occultation of this saviour imply? And why for this occultation? How can it be possible for some one to live for more than 1000 years? What are the benefits of a hidden Imam? And what benefits do his followers gain by his existence? What connections has the saviour’s advent with the world becoming filled with tyranny and oppression? And what are the duties of those awaiting his advent?