This book addresses prominent views on the nature of the self in Indian philosophical traditions and presents Buddhist critiques of those conceptions through the translation and commentary on Santaraksita's chapter in the Tattvasamgraha on theories of a self and Kamala-sila's commentary on it in his Tattvasamgrahapanjika. The book is comprised of an introduction presenting the theories of a self in the Indian Buddhist Middle Way philosophies and in the different philosophical schools AsA ntaraka ita and KamalaA A la study and offers a background for the translation. The detailed translation that follows reveals the theories of a self that are explained in the philosophical schools in India called the NyA ya-VaiA ea ika, MA mA a sA , SA a khya, Jain, Advaita Vedanta, and VA tsA putrA ya. It is complemented by a thorough commentary by the author which brings the text to light for a modern audience. A useful contribution to Indian philosophy and global philosophy, this book will be of interest to researchers in the fields of Philosophy, Religious Studies and Buddhist Studies.