Quotes:Causal Body

H. P. Blavatsky

Causal Body. This “body”, which is no body either objective or subjective, but Buddhi, the Spiritual Soul, is so called because it is the direct cause of the Sushupti condition, leading to the Turya state, the highest state of Samadhi. It is called Karanopadhi, “the basis of the Cause”, by the Târaka Raja Yogis; and in the Vedânta system it corresponds to both the Vignânamaya and Anandamaya Kosha, the latter coming next to Atma, and therefore being the vehicle of the universal Spirit. Buddhi alone could not be called a “Causal Body ”, but becomes so in conjunction with Manas, the incarnating Entity or EGO.

Source: H. P. Blavatsky, The Theosophical Glossary, art. Causal Body