The lower trilogy of Life, Mind and Matter ( Pranan,Mana and Annam Brahma ) are merelythe subordinate action powers of the Divine Quarternary ( Sat Chit Ananda Vijnanam Brahma ) !
Not only are the Sevenfold Chord of Being One in their Reality, all Brahman, but inseparable in the sevenfold variety of their action. This Immense Being is what the Rishies indicated by the term the Sevenfold mode of Cosmic Existence. The Sole Existent. The Pure Existent !