MK Gandhi, The Essence of Hinduism, Editor: VB Kher, Navajivan Publishing, see page 3; According to Gandhi, "a man may not believe in God and still call himself a Hindu."
Steven Collins (1994), Religion and Practical Reason (Editors: Frank Reynolds, David Tracy), State Univ of New York Press, ISBN978-0791422175, page 64; Quote: "Central to Buddhist soteriology is the doctrine of not-self (Pali: anattā, Sanskrit: anātman, the opposed doctrine of ātman is central to Brahmanical thought). Put very briefly, this is the [Buddhist] doctrine that human beings have no soul, no self, no unchanging essence."; John C. Plott et al. (2000), Global History of Philosophy: The Axial Age, Volume 1, Motilal Banarsidass, ISBN978-8120801585, page 63, Quote: "The Buddhist schools reject any Ātman concept. As we have already observed, this is the basic and ineradicable distinction between Hinduism and Buddhism" KN Jayatilleke (2010), Early Buddhist Theory of Knowledge, ISBN978-8120806191, pages 246–249, from note 385 onwards; Katie Javanaud (2013), Is The Buddhist 'No-Self' Doctrine Compatible With Pursuing Nirvana?, Philosophy Now (2013, Subscription Required);