Is what, or whether one believes the significant religious question; and although the religious communities of the world differ in belief, how much do they really differ in faith? 

Wilfred Cantwell Smith is Professor Emeritus of the Comparative History of Religion at Harvard and was also Chairman of the Study of Religion there. His academic career has taken him from Lahore, India, through Montreal to Harvard. He has published many academic texts as well as journal articles, and has been on the editorial board of seven scholarly journals in the UK and overseas.