No one may call his own what is common, because whatever is taken that is more than sufficient is taken violently. It is said that someone who takes more than is necessary commits violence . Si enim magna fuisset non imponeretur penitentia. One may conclude that since he was forced to do penance, there was only moderate necessity. If there was great necessity, a penance could not be imposed on him.
Necessity knows no law.
Quanquam autem regulariter quae ex humanitate debentur, hautquaquam vi possit eripi. United Nations International Covenant on Economic, Social, and Cultural Rights, 1966.