Utilitarianism:The ethical theory that the morally right course of action is the one that maximizes overall happiness or well-being for the greatest number of people.
Liberalism:A political ideology that emphasizes individual liberty, limited government, and free markets.
On Liberty: A seminal work by Mill that argues for the importance of individual liberty and the harm principle, which states that the only legitimate reason to restrict someone's freedom is to prevent harm to others.