- in- + cogitative (Wiktionary)
“Being to be nothing else but a composition of particles of matter, each whereof is incogitative, is to ascribe all the wisdom and knowledge of that eternal Being only to the juxta-position of parts; than which nothing can be more absurd.”
“Which, if you please, we will hereafter call cogitative and incogitative beings; which to our present purpose, if for nothing else, are perhaps better terms than material and immaterial.”
“For it is as impossible to conceive that ever bare incogitative matter should produce a thinking intelligent being, as that nothing should of itself produce matter.”
“And yet, if they will not allow matter as matter, that is, every particle of matter, to be as well cogitative as extended, they will have as hard a task to make out to their own reasons a cogitative being out of incogitative particles, as an extended being out of unextended parts, if I may so speak.”
“If, therefore, it be evident, that something necessarily must exist from eternity, it is also as evident, that that something must necessarily be a cogitative being: for it is as impossible that incogitative matter should produce a cogitative being, as that nothing, or the negation of all being, should produce a positive being or matter.”
“Thirdly, because a system of incogitative matter cannot be cogitative.”
“But let us suppose motion eternal too: yet matter, incogitative matter and motion, whatever changes it might produce of figure and bulk, could never produce thought: knowledge will still be as far beyond the power of motion and matter to produce, as matter is beyond the power of nothing or nonentity to produce.”
“Much more, therefore, may our broad distinction between "cogitative and incogitative being"  not be a distinction which is "legitimated by the conditions of external reality.”
“Now, in the former train of reasoning, the whole proof rests entirely upon the fact that "it is impossible to conceive that ever bare incogitative matter should produce a thinking intelligent being.”
“But to continue the quotation: -- "If, therefore, it be evident that something necessarily must exist from eternity, it is also as evident that that something must necessarily be a cogitative being; for it is as impossible [_inconceivable_] that incogitative matter should produce a cogitative being, as that nothing, or the negation of all being, should produce a positive being or matter.”
These user-created lists contain the word ‘incogitative’.
List of adjectives such as everduring that do not frequent common speech and writing. A continuation of my list Adjectival Arcana, which had grown to over 7700 words and had become far too cumbersome.
Looking for tweets for incogitative.