Upon reading about and later researching [1] Kant's famous Categorical Framework, which is included as a key part of his classic Critique of Pure Reason (1781), I am struck by aspects that are quite basic and intuitive, like his definition of "Quantity" (unity, plurality, totality) which contrasts with a more difficult frame for "Modality" (possibility, existence, necessity). It is said this work was intended by Kant to represent a framework for all knowledge, but Kant's writing style has been described by many (most?) scholars as a challenge to unravel. How much of his original intention has been, as they say, lost in translation? Is there anyone considered authoritative on what the C.F. truly means?
[1] Tarnas (1991), The Passion of the Western Mind p. 341-347.