In one of the closing paragraphs of Treatise Book 1, Hume provocatively concludes: ‘Generally speaking, the errors in religion are dangerous; those in philosophy only ridiculous’ . Unlike the first clause, the meaning of the second clause is far from obvious. I claim that errors in philosophy are ‘only ridiculous’ for Hume in the sense that – unlike errors in religion – they fail to disturb us psychologically or in practical life. The interesting question, however, is why they fail to (...) disturb us. I suggest that it is their critical role in resolving the psychological instability brought on by philosophical reflection that makes errors in philosophy quite helpful to us and necessary for re-stabilising ourselves. In recognising a positive role for philosophical errors, my account challenges the standard interpretation of Hume's claim according to which ‘ridiculous’ philosophical errors play the merely negative role of being innocuous or safely dismissed. (shrink)