When does Mill allow (and even invite) the encroachment of the state on personal liberty?

In 1859, John Stewart Mill wrote On Liberty. In it, he laid out the ethical foundation of democratic individualism. At the same time, Mill considered the circumstances under which individual liberty might be justifiably restricted. Under what has come to be known as the harm principle, Mill stated that a person's liberty may justifiably be restricted only in order to prevent harm that the person's actions would cause to others. "Over himself, over his own body …

…amp;lt;Tab/>John Gray, Mill on Liberty: A Defence, 1996, Routledge *<Tab/>J.S Mills & J.B. SCHNEEWIND: The Basic Writings of John Stuart Mill: On Liberty, the Subjection of Women and Utilitarianism, Modern Library; 2002 Modern Library pbk. *<Tab/>Skorupski, John (Ed) - The Cambridge Companion to Mill *<Tab/>(http://www.hn.psu.edu/faculty/jmanis/jsmill/liberty.pdf)