It cannot be seen by the eye, and yet it is the eye within the eye. It cannot be heard by the ear, and yet it is the ear within the ear. It cannot be smelt by the nose, and yet it is that which makes the nose to smell. It cannot be uttered by the mouth, and yet it is that which makes the mouth to speak. It cannot be grasped by the hand, and yet it is that which makes the hand to grasp. It cannot be reached by the feet, and yet it is that which makes the feet to walk. It cannot be thought by the mind, and yet it is the mind within the mind. It is the Primal One without past or future. Its form is free from age and sickness. It manifests as father and mother. It blossoms as the Self-Existent. It cannot be described as one or two. No artist can portray It. It is That which lies 'twixt good and evil. It ever abides in the hearts of the wise. It permits no distinction between Vedanta and Siddhanta. It is That which dances at the zenith beyond the realm of sound.
-- Satguru Siva Yogaswami (1872-1964), Sri Lanka's most renowned contemporary spiritual master