Tattva is a Sanskrit word that means 'thatness', 'principle', 'reality' or 'truth'.^[1] According to many Indian schools of philosophy, a tattva is an element or aspect of reality conceived as an aspect of deity.

• Prasad, Ram (1997). Nature's Finer Forces: The Science of Breath and the Philosophy of the Tattvas. Kessinger. ISBN 1-56459-803-9
• Ramacharaka Yogi (1997). Science of Breath. Kessinger. ISBN 1-56459-744-X
• Singh, Jaideva (1979). Siva Sutras: The Yoga of Supreme Identity. Delhi: Motilal Banarsidas.
• Tattvakosha^{[permanent dead link]} - An Encyclopedia on Absolute Truth in a Vedic paradigm.
• Swami Satyananda Saraswati. Tattva Jnana. Devi Mandir. ISBN 1-877795-62-3.

• Uses of 'tattva' in Puranic and Gaudiya Vaishnava literature Archived 2015-06-28 at the Wayback Machine.
• Articles Archived 2012-04-27 at the Wayback Machine on Absolute Truth in a Vedic paradigm.

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