Our normal human observation sees individual objects as if they are separate forms or beings, and does not, other than through an intellectual exercise, make the connection that all these forms are really one and unified in a coherent field. No matter how intensely we develop the physical sight, this limitation still holds back our seeing and our understanding of the material creation within which we exist and move. We take on the role of the observer and the forms of the world are the objects of our observation. The separation is the primary experience. For the spiritual sight, however, another dimension is added, a dimension of what has been called “psychic” or “mystic” or “spiritual” vision. This dimension integrates all the forms we observe, and all the patterns of movement that take place between and among these forms, as part of the “unified field” of a unitary existence that constitutes everything that IS.
Sri Aurobindo notes: “There is at the same time a subtle change which makes the sight see in a sort of fourth dimension, the character of which is a certain internality, the seeing not only of the superficies and the outward form but of that which informs it and subtly extends around it. The material object becomes to this sight something different from what we now see, not a separate object on the background or in the environment of the rest of Nature, but an indivisible part and even in a subtle way an expression of the unity of all that we see. And this unity that we see becomes not only to the subtler consciousness but to the mere sense, to the illumined physical sight itself, that of the identify of the Eternal, the unity of the Brahman. For to the supramentalised seeing the material world and space and material objects cease to be material in the sense in which we now, on the strength of the sole evidence of our limited physical organs and of the physical consciousness that looks through them, receive as our gross perception and understand as our conception of matter. It and they appear and are seen as spirit itself in a form of itself and a conscious extension. The whole is a unity– the oneness unaffected by any multitudinousness of objects and details– held in and by the consciousness in a spiritual space and all substance there is conscious substance. This change and this totality of the way of seeing comes from the exceeding of the limitations of our present physical sense, because the power of the subtle or psychical eye has been infused into the physical and there has again been infused into this psycho-physical power of vision the spiritual sight, the pure sense, the supramental Sanjnana.”
Sri Aurobindo, The Synthesis of Yoga, Part Four: The Yoga of Self-Perfection, Chapter 24, The Supramental Sense , pp. 837-838