"The general scholarly consensus has been that the Yoginī cults so foundational to early Tantra emerged out of an autochthonous non-Vedic Indian source. The point I wish to make here is that it is quite artificial to inject a distinction between ‘Vedic’ or ‘Indo-Aryan’ tradition, on the one hand, and ‘non-Vedic’ or ‘Indus Valley’ on the other. The religion and culture is already present in the Vedas, together with the more predominant Indo-Aryan material, and is no more ‘indigenous’ to the Indian subcontinent and no more ‘alien’ to the Veda than the latter. It suffices to scratch the surface of the salient features of the Yoginī cults to find a vast reservoir of Vedic and classical Hindu precursors, in the cults of Vedic goddesses ; the various groupings of unnumbered mother goddesses ; and in general attitudes toward women and femininity."

“The energy levels of the Tantric universe are generally represented as a set of concentric circles of hypostasized forms of the divine energy which, in addition to appearing as an array of divine enlightened, perfected , demonic, human or animal beings, also manifest themselves on an acoustic level, as garlands or piled-up aggregates of phonemes , on a graphic level, as the written characters of the hieratic alphabets and as the hierarchized cakras of the yogi body.”

“Perhaps the best-known mandala-cum-plotting device in the Tantric universe is the Sri Cakra and Sri Yantra of Hindu Tantric practice, a perfectly balanced three-dimensional geometric diagram of a series of eleven interlocking and embedded triangles radiating downward and outward from a central point and enclosed by a circle and a square. The mandalas of Buddhist and Jain Tantric practice follow similar structural and dynamic principles.”

“The theory and practice of the Tantric mandala operates on a mesocosmic level , that is, on the level of a mediating template between protocosm and metacosm as well as between macrocosm and microcosm.”

“Tantra emerged out of South Asian elite and popular mainstream some time in the middle of the first millennium C.E.”