Academic freedom is founded on two fundamental principles: professional autonomy and the public good. These dual foundations are necessarily in tension with each other. Academic freedom is not a civil right, as is freedom of speech, nor is it an individual employment benefit provided to those in a restricted number of academic appointments. It is, instead, a freedom belonging to the academic profession collectively to pursue inquiry and teach freely, limited and guided by the principles of that profession and of a scholar’s respective disciplines. Academic freedom guarantees both faculty members and students the right to engage in intellectual inquiry and debate without fear of censorship or retaliation. It grants considerable scope to the consciences of individual teachers and researchers, but functions ultimately as the collective freedom of the scholarly community to govern itself in the interest of serving the common good in a democratic society. Academic freedom must protect not only independent research and classroom teaching, but a scholar’s expression as a citizen of both the university and the broader polity. Hence, to thrive, academic freedom depends on a democratic and constitutional system that guarantees the rule of law. Academic freedom has always been contested and vulnerable, to be sure, but in recent years it has faced a series of escalating challenges almost everywhere, amounting to a major crisis. In this context, calls for ‘institutional neutrality’ must be critically examined.