Reason

The world is covered under the atmosphere of uncertainty! Worldliness is ascribed to be uncertainty because the vast wobble of the universe is over there to run the worldliness in a way of its own consequence.
The world has been consummated due to incessant flow of time that makes the worldliness in way of disparity inside its own faulty consequence. Thing-for-itself means to be a manifestation of phenomenonal materialism that has made the materiality flown into the realm of sightedness. When someone is encountering an entity, he has never known the truth because the truth is embedded inside being-in-itself as 'it' is being flown towards the future and as it is heading towards the furtue it is also aiming at the purpose of returning back to The One, The Origin.
The Origin, is, by no means, a kind of Myth that no one has ever tried to define it or has ever seen it. The comprehension of The Origin is unknown but our sense of conprehension of The One is just embedded inside the vagueness of the superficial phenomenon but we are only projecting our sense towards the future to archieve our daily routine for survival. Kant, in his critics of pure reason, has proposed that consequence is nowhere because humanity put it as a kind of incessant flow of reason and consequence pairs that the former consequence can be the latter reason or cause that it takes turn to rotate by the realm of names. names, by the senses of humanity, is just a representation of identity which can be the dimensional caress of the content, by the sense of humanity, is a mass of rotating shifting being-for-itself, being transcended from the state of Being as The One.
Pure reason, is, shown upon the faces of those elite philosophers, whose mind is based upon The Origin. Humanity is a vast majority of Reason which has been diverted into varieties to be manifested as the worldliness which in turn, is the mystical plane of The One. There is no obvious manifestation of The One as The Truth in the worldliness. We have just seen all the thing-for-itself is just a manifestation of cause and consequence pairs and the rotating turns are just to make the causes to become consequences. Reason is just a name that refers being-in-itself as a kind of numeric order which has its own content compacted into One.
Reason, now, is both compacted and relieved that the turns taken to make the worldliness as a kind of cuases and consequences pair, is no more important to be stressed on. The worldliness is no more to be elucidated as cause and consequence pairs but is explained as a kind of Pure Reason's being transcended into the realm of angst that it is deviated into varieties so that language is at this critical moment, important.
Languages show how the humanity, originally was One, has been deviated into a mass majority of minorities. Language shows the house of One, which has become transcended towards the future in the function of being-for-itself which was derived from Being-in-itself through the process of reasoning, has become manipulated by the function of numeric Two to have its own Selfness's being directed toward the plane of materialism. The realm of spirituality was a vague concept and it has become clarified through the process of being thrown, now the house of humanity established through the essence of Language.
Thus, what reason is, is just a matter of concept upon what Language is.