The book consists of a series of letters in the form of questions and answers exchanged between Shaykh Salim Al-Bishri, Head of Al-Azher University at Cairo in early 20th century and Saiyed Sharafuddin Al-Musawi, an eminent shiÆi scholar of the time. The Shaykh initiated the discussion out of an earnest desire to investigate and understand the Shii point of view. Hence this valuable and great book explains, justifies and upholds the Raison dÆetre of Shiaism.