For the anti‐realist, the truth about a subject's past thoughts and attitudes is determined by what he is subsequently disposed to judge about them. The argument for an anti‐realist interpretation of Wittgenstein's view of past‐tense statements seems plausible in three cases: dreams, calculating in the head, and thinking. Wittgenstein is indeed an anti‐realist about dreaming. His account of calculating in the head suggests anti‐realism about the past, but turns out to be essentially realistic. He does not endorse general anti‐realism about past thoughts; but his treatment does in some cases involve elements of anti‐realism, unacceptable in some instances but possibly correct in others.