Quote from heidegger:
You are aware that you are hungry; you say to yourself "I am aware that I am hungry." . If your awareness was not arrived at through either logic or material observation is your awareness not an entity that is a member of the set of all entities that exist at that moment and your statement not a member of the set of all truthful statements?
You cannot tell the difference whether you're really hungry or you're just hallucinating, without "either logic or material observation." Without that, you cannot know whether your statement is "a member of the set of all truthful statement."
Heidegger would know better.
