ABSTRACT
Mind-stuff is made up of three qualities— purity, energy, inertia. Having these three qualities, mind is the primary vehicle of the modifications of intellect which ultimately becomes illumined with the light of the Universal Consciousness. The first quality, purity of mind, and its unselfish activity is an indirect means to salvation because it permits spiritual unfoldment. Right knowledge is the determinant of release and ignorance that of bondage. Mind having such a large field of activity in the human being, has to be controlled in the practice of yoga. The human mind is just like a spherical lens designed to be capable of giving a three-dimensional image inside itself of every external object. The primary instincts of the mind should then be controlled by contrary production, substitution and sublimation. The subconscious impulse should be counteracted by the mind, by direct effort and by a conscious opposite counteracting impulse.
