 In MWO, Lewis (1929, 53) also famously says that the given is “ineffable”. So how can what is ineffable even be true, and how can what is neither true nor false, nor as a result, neither probably true nor probably false, serve as the ultimate premises of a priori valid logical probability relations licensing belief or assertion with probability or credibility? And how can we anticipate or predict future experience that isn’t yet given, except in conceptual or comparative terms that won’t allow for decisive falsification? Again, there may seem to be tension in Lewis’ views of the given and the epistemic role he assigns it. Lewis (1936a and 1936b, reprinted in Lewis 1970, 155–7, 292–3) clearly recognizes the logical and epistemological problems, and he responds by introducing categories of expressive statements and the expressive use of language. This carries over into AKV. Expressive statements like “It seems as though I am seeing a red round thing” serve to convey or express or denote what we directly apprehend in experience without conceptualizing and interpreting it. They are true by virtue of the qualitative character of experience they express and are verified by it, and false only when we knowingly lie about our experience, and the ineffability of what they express just consists in their not implying possibilities of further experience. Moreover, their truth is something that we know, or, as he more carefully and repeatedly says in AKV, something about which we are certain (Lewis 1946, 171–2, 183, 204, 327). The expressive use of language is to convey or express what is not only directly apprehended but what may be directly apprehensible in the future or, perhaps, was directly apprehensible in the past. (Lewis 1946, 179). Nonetheless, Lewis notes that the expressive use of language is needed only for the discussion of knowledge, not for knowledge itself (Lewis 1946, 183; 1952a, reprinted in Lewis 1970, 327). So perhaps it isn’t surprising that later he also talks of “immediately given facts of sense” and “facts of our seeming to remember” (Lewis 1946, 327, 353) and “datum facts” and “logical relations of facts” (Lewis 1952a, reprinted in Lewis 1970, 325). 