The Age of Reason is first and foremost an age of public reasoning. Equipped with a fresh and indeed unprecedented consciousness of feasibility and responsibility, educated citizens start to participate actively – and in many cases by taking personal risks – in discourses on political, religious and philosophical issues. In this article, I will highlight two core issues of the late eighteenth century – the dispute about the legitimacy of the French Revolution as well as its underlying philosophical conceptions and the rising human rights idea – and thereby revisit the interventions of three women who, though rediscovered in various fields of research, still have to gain their due recognition as pre-eminent political philosophers of their time.