 Griffin claims that human rights suffer even more than other normative concepts from an “indeterminacy of sense” that makes them vulnerable to proliferation (Griffin 2008). He thinks that tying all human rights to the single value of normative agency while taking account of practicalities is the best way to remedy this malady. He criticizes the frequent invention of new human rights and the “ballooning of the content” of established rights. Still, Griffin is friendly towards most of the rights in the Universal Declaration of Human Rights. Beyond this, Griffin takes human rights to include many rights in interpersonal morality. For example, Griffin thinks that a child’s human right to education applies not just against governments but also against the child’s parents.