The material collected in this volume comprises most of my studies to date on Imam! Shl'ism. In addition to these, there are three other articles relevant to this theme which could not be included here: "Some Notes on the Imamite Attitude to the Qur'an" (Islamic Philosophy and the Classical Tradition, Essays Presented by his Friends and, Pupils to Richard Walzer on his Seventieth Birthday, ed. S.M. Stern et al., Oxford: Cassirer, 1972, pp. 209-224); "Shi:'i:ljadUh" (The Cambridge History of Arabic Literature, I, Arabic Literature to the End of the Umayyad Period, ed. A. F. L. Beeston et al., Cambridge: Cambridge University Press, 1983, pp. 299-307); and "Barii'a in Shl'l Doctrine" (Jerusalem Studies in Arabic and Islam VII [1986], pp. 139-175).