International audience"The defense of competitive markets and that of social justice are often perceived as contradictory. Two liberal traditions are in opposition, illustrated by two emblematic liberals, Friedrich Hayek and John Rawls. In this article I show that the opposition between social justice and competitive markets is irrelevant, because the defenders of a liberalism involving robust capitalist institutions always entails a conception of social justice. Recently John Tomasi has shown how to reconcile Hayek and Rawls' views at the most fundamental level of ideal political philosophy. This defense, however, produces particular interpretations of liberalism's constitutive ideals, which imply new lines of tension within liberalism""La...