Philosophy of mind
Dualism is a set of views about the relationship between mind and matter (or body). It begins with the claim that mental phenomena are, in some respects, non-physical. One of the earliest known formulations of mind–body dualism was expressed in the eastern Sankhya and Yoga schools of Hindu philosophy (c. 650 BCE), which divided the world into purusha (mind/spirit) and prakriti (material substance). Specifically, the Yoga Sutra of Patanjali presents an analytical approach to the nature of the mind.
David Loy
In addition to many scholarly papers and popular articles, Loy is the author of several books on comparative philosophy and social ethics, including:"Nonduality" focuses on the nonduality of subject and object in Buddhism, Vedanta, and Taoism, with reference to several Western thinkers including Wittgenstein and Heidegger. The main argument is that these three Asian systems may be different attempts to describe the same (or very similar) experience. The categories of Buddhism (no self, impermanence, causality, eightfold path) and Advaita Vedanta (all-Self, time and causality as maya, no path) are "mirror images" of each other. Ultimately it becomes difficult to distinguish a formless Being (Brahman) from a formless nonbeing (shunyata). Buddhism can be understood as a more phenomenological description of nonduality, while Vedanta is a more metaphysical account.