 For classical foundationalists like Russell, all knowledge of truths ultimately depends on foundational knowledge of truths acquired by acquaintance. But how exactly does acquaintance contribute to this knowledge of truths? If acquaintance is nothing like a judgment or belief, and if the items with which we are acquainted are themselves neither true nor false, how do we get any knowledge of truths out of acquaintance? We turn to this question in  section 3.