The organizers of the 30th Biennial IVR World Congress have dedicated this year to both G.W.F Hegel (1770-1831) and John Rawls (1921-2002) contributions to Legal Philosophy. This SW intends to commemorate the centennial of John Rawls, the 50th anniversary of A Theory of Justice (1971), and even the 20th anniversary of his passing away, by focusing on Practical Reasoning, Public Reason and Reflective Equilibrium. The idea is to discuss Rawls influence in legal, moral and political philosophy, and in Ronald Dworkin’s Constructive Interpretation aka Interpretivism, Joseph Raz’s Public Authority and Reasons for Action, W.J. Waluchow’s Living Tree Constitutionalism, among others, and his debate with Jürgen Habermas on the public use of reason.