Starting from the assumption that human rights protect universal interests, I focus on duties correlative of human rights and, in particular, on positive duties- i.e. duties to perform an action. I address the issue of their scope: I assess, that is, who bears these duties. The goal of the dissertation is to defend what I call the 'Universal Scope Thesis', according to which everyone bears the positive duties correlative of each person’s human rights, except in cases in which agents a...