An American philosopher who revived political philosophy with A Theory of Justice, from 1971. He proposed a thought experiment: choosing the rules of society without knowing what place we would occupy in it. He concluded that reasonable people would secure equal liberties and accept inequalities only when they benefit the least advantaged.
Core ideas
Just principles are those we would choose behind a veil of ignorance
Everyone should have the same basic liberties, such as speech and the vote
Inequalities are just only if they benefit the least advantaged
The tradition: Egalitarian liberal
Egalitarian liberalism joins the defense of individual liberties with the pursuit of social and economic equality. Rawls is the main reference of this line.