In this thesis I outline a conception of intellectual autonomy, and defend it against arguments that question the value of intellectual autonomy as an educational goal. Beyond offering a view of intellectual autonomy that is free of the defects found in other conceptions, I assess the rationality of belief on testimony, and consider the impact that externalist theories of epistemic justification might have on arguments such as mine that defend autonomy in justification. I argue that belief on testimony is more rational than is typically allowed, and that intellectual autonomy cannot be justified solely in terms of the conditions necessary for knowledge or justification. I argue instead that intellectual autonomy is best conceived as an epis...