The Naiskarmya-siddhi, one of the four important works in the siddhi-literature of Advaita, is a valuable prakarana-grantha written by the great scholar and direct disciple of Sankaracarya, Suresvara, which explains and justifies the doctrines of Advaita in four chapters. It is, in the words of Suresvara, a compendium of the entire philosophy of Vedanta (asesa-vedanta-sara- sangraha-prakaranam). Written partly in prose and partly in verse, Suresvara makes use of the prose element to introduce a wide range of ideas: to state a problem for discussion, to provide an introduction to the verses following or to state an objection of an opposing viewpoint and to counter it. This definitive explanation, notes and commentary on the Naiskarmya-siddhi is replete with Prof. Balasubramanian's scholarship and clear explanations that will be of immense value to any serious student - whether scholar, seeker or beginner - in understanding the fine nuances of Advaita-vedanta.