During 1776 Bentham brought out his first major work, A Fragment on Government.
But his most important theoretical work is the Introduction to the Principles of Morals and Legislation (1789), in which he propounded the principle of “the greatest happiness of the greatest number”. Bentham made important contributions in the fields of ethics, law and political thought.
He designed a modern prison (panoptical) which Parliament though committed to construct, didn’t. But after his death many prisons were build on his design.
He argued in favour of individual and economic freedom, including the separation of Church and State, freedom of expression, equal rights for women, animal rights, the end of slavery, the abolition of physical punishment (including that of children), the right to divorce, free trade, and in defence of usury and homosexuality.
He supported inheritance tax, restrictions on monopoly power, pensions, and health insurance. He died in 1832.