International audienceThe virtues of truth and truthfulness are significant features of Locke’s philosophicalethos. To love truth for truth’s sake, one needs to attend to the various opinions submittedto one’s judgment with perfect indifference. This epistemic “indifferency” is boththe golden rule for an “ethics of belief,” stating that one should not entertain “any propositionwith greater assurance than the proofs it is built upon will warrant” (essay IV.xix. 1), and an intellectual virtue that one has to foster and cultivate through study andexercise. The last part of the paper shows how these views are illustrated in Locke’s ownpractice of philosophy, especially in an essay concerning Human understanding.L’ethos philosophique de Locke se...