Self-fulfilling beliefs are, in at least some cases, a kind of belief that is rational to form and hold in the absence of strong evidential support The rationality of such beliefs have significant implications for a range of debates in epistemology. Most startlingly, it undermines the idea that having sufficient evidence for the truth of p is necessary for it to be rational to believe that p. The rationality of self-fulfilling beliefs is here defended against the idea that their rationality (...) is incompatible with a compelling closure principle. (shrink)