No idea is ever really outside another, nor is any idea ever outside the mind, and all ideas, all that which is seen, can only theoretically be separated from the thinking seeing mind. As psychologists we have had in thought to separate seer from seen, so that we might learn at length what the nature of pure mind really is; but as philosophers we must now merge them together. It is because thinking must always have an object with which to occupy itself that it can never penetrate the Overself, for here there is only the One. We must renounce thoughts and things if we would enter into the Absolute. Because in this ultimate state there is no more awareness of an individual observer and an observed world, the distinction between individual mind and individual body also ceases. Everything, including our separate selfhood, is voided out, as it were. The resultant nothingness however is really the essence of everything. It is not the nothingness of death but of latent life. Human thought can proceed no farther. For when "not-two-ness" is established as the Real, the logical movement from one thought to a second can only prolong the sway of "two-ness" over the mind. In this pure being there can be no "other," no two, hence it is called non-dual. The integrity of its being cannot really be split. If the Overself is to be actually experienced, then it must be as a realization of the Infinite One. To divide itself into knower and known is to dwell in duality. The antithesis of known and knower cannot enter into it just as the opposition of reality and illusion is meaningless for it. The oneness of its being is absolute. The return to this awareness, which regards the world only under its monistic aspect, is the realization of truth possessed by a sage. When rational thinking can perceive that it cannot transcend itself, cannot yield more than another thought, it has travelled as far as it can go and performed its proper function. Metaphysical truth is the intellectual appearance of reality, the rational knowledge of it; but it is not reality itself, not realization. For knowing needs a second thing to be known; hence metaphysical knowledge, being dual, can never yield realization which is non-dual.
Reality must stand grandly alone, without dependence on anything and without relation to anyone; it ever was, is, and ever will be. It is this inability of human reason to grasp the super-rational, the divine ineffable, that Omar Khayyam tried to express in his beautiful quatrains which have been so widely misunderstood by Western readers. If the Rubaiyat of Omar is only a drunken refrain from a wine-shop, then the New Testament is a mere scribble from an out-of-the-way corner of the Roman Empire. The cup of language is too small to hold the wine of the Absolute. A thought of Mind as the Void is still a "something" no less than a thought of great mountains and therefore prevents us from realizing the Void.
Now when we grasp the basic nature of human thinking, that it is possible only by forming two opposing ideas at the same time as the concept of black is formed by the contrast against white, we can then grasp the fundamental reason why such thinking can never rise to awareness of the Absolute unity. We cannot think of eternity without thinking of time too. For our conception of it either prolongs time until imagination falters and ceases or negates time altogether into timelessness. In neither case do we really comprehend eternity. Why? Because intellect cannot lay hold of what lies beyond itself. We humans know a thing by distinguishing it from other things, by limiting its nature and by relating it to its opposite. But the infinite has nothing else from which it can be distinguished or to which it can be related, whilst it certainly cannot be limited in any way.
Our earlier division into a dualism of observer and observed must now come to an end. But let us not make the error of mistaking it for the final stage. There still lies a path beyond, a path which leads to the ultimate where both observer and the observed become one.
The Real can never be stated because it can never be thought. Therefore it is quite clear that ordinary means of knowledge are unable to grasp it. But such knowledge is not useless. For if religion can give us a symbolic idea and mysticism an intuitive idea of the Infinite, metaphysical knowledge can give us a rational idea of it. And to possess such an idea keeps us at least from falling into errors about the reality behind it. If metaphysics can never perform the task it sets itself--to know reality--it can perform the task of knowing what is not reality. And such a service is inestimable. The function of reason is ultimately a negative one; it cannot provide a positive apprehension of the Overself, but it can provide a clear declaration of what It is not. Reason can demonstrate that the Overself can possess no shape and can in no way be imagined.
Nevertheless we may have both the assurance and the satisfaction that our thinking is correct but we have neither the assurance nor the satisfaction of consciously embracing that with which this thinking deals. We may have formed a right mental image of God but we are still not in God's sacred presence. We must not mistake the image for the reality which it represents. Whatever discoveries we have hitherto made have been made only within the limited frontiers of reasoned thinking. Exalted and expanded though our outlook may now be, we can still do no more than think the existence of this reality without actually experiencing it. The mere intellectual recognition of this Oneness of Mind is no more sufficient to make it real to us than the mere intellectual recognition of Australia's existence will suffice to make Australia real to us. In the end all our words about the Overself remain but words. For just as no amount of telling a man who has never touched or drunk any liquid will ever make properly clear to him what wetness is unless and until he puts his finger in a liquid or drinks some of it, so every verbal explanation really fails to explain the Overself unless and until we know it for ourself within ourself and as ourself.
-- Notebooks Category 7: The Intellect > Chapter 8 : Intellect, Reality, and The Overself > # 2
-- Perspectives > Chapter 7: The Intellect > # 29