Practical Reason and Language

Laws, maxims, and imperatives are all verbal formations.  Thus, so, too, must be Kant's Fundamental Principle of Practical Reason, which is characterized in those terms, even if he does not explicitly describe it as such.  Left unclear is whether or not he also conceives Theoretical Reason to be essentially verbal, or whether or not he is implying that the Philosophical Logos has always been verbal, even if not acknowledged.  In any case, his elevation of a verbal formulation to the apex of his system, and the establishing of such as the fundamental principle of Morality, are perhaps even more innovative than his prioritizing of Practice over Theory.  Among other notable implications is the Causality of Language, which is entailed in his concepts of Maxim, Law, and Imperative, and the question of how that concept of Causality bears upon his debate with Hume on that topic, e. g. whether or not the Causality of Language is of a different kind than that of Nature.