Sri Aurobindo - All Life Is Yoga: Planes and Parts of the Being

Men do not know themselves and have not learned to distinguish the different parts of their being; for these are usually lumped together by them as mind, because it is through a mentalised perception and understanding that they know or feel them; therefore they do not understand their own states and actions, or, if at all, then only on the surface. It is part of the foundation of Yoga to become conscious of the great complexity of our nature, see the different forces that move it and get over it a control of directing knowledge. We are composed of many parts each of which contributes something to the total movement of our consciousness, our thought, will, sensation, feeling, action, but we do not see the origination or the course of these impulsions; we are aware only of their confused pell-mell results on the surface upon which we can at best impose nothing better than a precarious shifting order. The remedy can only come from the parts of the being that are already turned towards the Light. To call in the light of the Divine Consciousness from above, to bring the psychic being to the front and kindle a flame of aspiration which will awaken spiritually the outer mind and set on fire the vital being, is the way out. (Sri Aurobindo)