On the Essence of Truth--The Ground of the Possibility of Correctness
Heidegger next asks the question: “How can something like the accomplishment of a pregiven directedness [i.e. comportment] occur?” The answer lies in freedom: “To free oneself for a binding directedness is possible only by being free for what is opened up in an open region... The essence of truth is freedom.” This is a notion of freedom that has thus far been “uncomprehended” in the history of philosophy; most discussion of freedom is spoken of in terms of ‘freedom from’ (or ‘negative freedom’), leaving us with the question of what is freedom for (‘positive freedom’)? For Heidegger, this means that existential freedom is an ubiquitous but ‘unthought’ ontological assumption within philosophy. As an existential ground for truth, freedom in this sense must be present in every truthful utterance or proposition. But Heidegger is not claiming that freedom is “an unconstrained act” of giving or receiving a proposition, as if freedom were restricted to such actions. Rather, “freedom is the essence of truth”; just as comportment grounds the possibility of accordance, freedom is the ground for the possibility of comportment. Hence, “essence” means “the ground of the inner possibility of what is initially and generally admitted as known [i.e. correctness].”
Does Heidegger mean that truth is merely a subjective whim based on “human caprice”?  It appears as if truth has been “driven back to the subjectivity of the human subject,” losing its connection with the world. This possibility is strengthened when we readily admit that all sorts of falsehood--“deceit and dissimulation, lies and deception, illusion and semblance”--are attributable to humans. Previously, though, we defined truth in relation to accordance, so referencing the human basis of error seems irrelevant: “This human origin of untruth indeed only serves to confirm by contrast the essence of truth ‘in itself’ as holding sway ‘beyond’ man,” perhaps in some “imperishable and eternal” world. Truth seems to exist in some extra-human world, perhaps in the intellectus divinus or, as more recent theorists propose, in independently existing propositions/universals. But this resistance to freedom as the essence of truth “is based on preconceptions, the most obstinate of which is that freedom is a property of man.” Since “[e]veryone knows what man is,” any further questioning seems unnecessary. Here we see the same roadblocks that we had in relation to truth: stubborn “common sense” and an indifference to the question.