 Not all classical foundationalists require acquaintance with the correspondence (or some other similar relation) between some thought or proposition and a distinct fact for one to have knowledge by acquaintance. For example, according to McGrew (1995, 1998), for any object of acquaintance or direct awareness it is possible to form a belief in which a demonstrative concept refers directly to it. By virtue of my acquaintance with a painful experience, I can believe directly of it that it exists, or that the property demonstrated, painfulness, is instantiated. We could express the belief roughly by saying “I am experiencing this.” For this kind of belief (unlike most other beliefs regarding contingent facts), to genuinely understand or grasp the content of the belief is to grasp its truth. Such demonstratively formed beliefs are guaranteed to be true: