A libertarian is an individual who advocates for minimal government intervention in both personal and economic matters, emphasizing individual liberty and personal responsibility. They believe in the protection of personal freedoms, free markets, and voluntary exchanges, often opposing state control and regulation. Libertarians typically support civil liberties, limited government, and non-interventionist foreign policies. The core principle is that individuals should have the freedom to make choices about their own lives as long as they do not infringe on the rights of others.