warning that certain substances are poisonous and certain activities are dangerous. We require an initial deposit of beliefs before we begin thinking about our intellectual lives in a reflective way. Chronologically speaking, we accept inputs to our repertoire of beliefs as they come. Logically speaking, however, not all the beliefs we accept deserve to be accepted in the same way. Some are obviously pivotal, anchoring other beliefs we hold; others are subordinate. As we shall see, foundationalists