For non-dualism one has to look beyond mind to its origin. This cannot be done by the mind, of course,which is why scholars can never hope to understand non-duality in the way meditators and contemplatives come to understand it, as an actual phenomenon — PeterJones
If non-dualism is an actual phenomenon, according to meditators, what is it that appears? What is it that physically, quantitatively, exists, as effect on sensibility, which all an appearance was ever meant to indicate? Which sensory device is affected by a non-dual appearance, in order for the scholar or the regular joe to immediately intuit anything with respect to it?
While it is true the mind cannot look beyond itself, it is equally true the mind is that by which everything conceivable is looked for; there is no other irreducible originator of whatever it is that humans do pursuant to their intrinsic intellectual capacities.
If it be granted the human mind is a purely logical system, and as such, for any possible conception the negation of it is given immediately upon the spontaneity of the conception itself, it is then self-contradictory to suggest the origin of non-dualism can only reside beyond the mind, when it is necessarily the case dualism originates within it. If dualism is given, or if not given then at least determinable by the mind, and if the principle of complementarity holds, then it is necessarily the case the concept of non-dualism also originates under the same conditions and therefore from within that same mind.
So it would seem, despite what meditators and contemplatives would have it, the origin of non-dualism must be beyond the mind, or beyond the mind as scholars and regular joes understand it, for no other reason than that form of mind used by other than meditators cannot justify the conception beyond the principle by which it is a valid thought.
And from that arises the notion that the categories of thought, which legislate the speculative methodology of the scholar’s mind, in which the relation of conception and intuition are determinable, are not necessary functionaries for a mediator’s/contemplative’s notion of mind from which non-dualism would manifest.
Which gets us right smack dab into the phenomenal/noumenal dichotomy, insofar as, while it is irrational to degrade the distinction itself as impossible, re: noumena are conceptually valid but still only intuitively impossible, it remains the fact there is no non-contradictory means of constructing judgements with respect to empirical representations of them.
It follows that a mind predicated on an intrinsic duality cannot possibly originate that which is contradictory to it, but that in itself is not sufficient to prove another kind of mind also cannot, which immediately leaves it possible another kind of mind can originate a non-dualism absent its antecedent complement.
But how would an intrinsically dualistic mind, such as a human mind, which must include the minds of meditators and contemplatives insofar as these are humans, ever even enjoin to that which for it, is impossible?
“…. From all this it is evident that rational psychology has its origin in a mere misunderstanding. The unity of consciousness, which lies at the basis of the categories, is considered to be an intuition of the subject as an object; and the category of substance is applied to the intuition. But this unity is nothing more than the unity in thought, by which no object is given; to which therefore the category of substance—which always presupposes a given intuition—cannot be applied. Consequently, the subject cannot be cognized. The subject of the categories cannot, therefore, for the very reason that it cogitates these, frame any conception of itself as an object of the categories; for, to cogitate these, it must lay at the foundation its own pure self-consciousness—the very thing that it wishes to explain and describe….”
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On the other hand, of course in one respect you are quite right:
“…. those who are engaged in metaphysical pursuits are far from being able to agree among themselves, but that, on the contrary, this science appears to furnish an arena specially adapted for the display of skill or the exercise of strength in mock-contests—a field in which no combatant ever yet succeeded in gaining an inch of ground, in which, at least, no victory was ever yet crowned with permanent possession.…”
Hence the fun in philosophizing well, or, as ol’ Rene admonishes, “rightly conducting reason”: display of skill in which no one is embarrassed, and an exercise in strength in which no one gets hurt.