Political liberals claim that liberal polities may legitimately dismiss the objections of ‘unreasonable’ citizens who resist political liberals’ favored principles of justice and political justification. A growing number of other political philosophers, including post-colonialist theorists, have objected to the resulting insularity of political liberalism. However, political liberals’ insularity also often prevents them from being sensitive or responsive to these critics’ complaints. In this article, I develop a more efficacious internal critique of political liberalism: I show that political liberals’ own core (...) principles of liberal legitimacy sometimes require liberal polities to engage with the objections of those who hold ‘unreasonable’, and even illiberal, views. First, I draw on the work of Sayyid Qutb, an illiberal Islamic political thinker, to argue that – contrary to what political liberals often imply – even ‘unreasonable’, illiberal citizens may be fair-minded: that is, they may be actively concerned to cooperate with others on fair and mutually endorsable terms. Second, I contend that a liberal state’s own core commitment to treating citizens as free and equal requires it to offer fair-minded illiberal citizens like Qutb deep reasons – that don’t presuppose agreement on liberal principles of justice and so can speak to them in the dialectical position they start from – for why they should accept the liberal laws with which the state coerces them to comply. By showing how political liberals’ own commitments oblige them to address even ‘unreasonable’ political perspectives, I open the door to their more robust engagement with their critics, including not only comparative political theorists but also the growing number of illiberal citizens who challenge democratic regimes. (shrink)