Why has the "Philosophy for Children" movement failed to make significant educational inroads in Australia, given the commitment and ongoing efforts of philosophers and educators alike who have worked hard in recent decades to bring philosophy to our schools? In this article we single out one factor as having particular importance, namely, that, on the whole, teachers consider philosophical inquiry to be futile. We argue that the explanation rests with teachers' underlying epistemological beliefs and that openness to philosophy depends upon teachers being disposed to engage in the practices of reason-giving and reason evaluation, being aware of the epistemic value of such practices and, concomitantly, having highly developed reasoning skills. Drawing on both anecdotal evidence and wide-ranging research from within cognitive psychology, we go on to make a case for change within teacher education programmes.