Before revision: What makes perfectionist liberalism perfectionist is it's embracement of an objective theory of the good life (or of human well-being) and the belief that it is the business of the state to (sometimes) promote the good life of it's citizens or (if a cosmopolitanist theory of justice is correct) to promote the good life of all human beings.
After revision: What makes perfectionist liberalism perfectionist is its embracement of an objective theory of the good life (or of human well-being) and the belief that it is the business of the state to (sometimes) promote the good life of its citizens or (if a cosmopolitanist theory of justice is correct) to promote the good life of all human beings.