Libertarianism (from French: libertaire, lit. 'libertarian'; or from Latin: libertas, lit. 'freedom') is a political philosophy that holds freedom, personal sovereignty, and liberty as primary values. Many libertarians believe that the concept of freedom is in accord with the non-aggression principle, according to which each individual has the right to live as they choose, as long as they do not violate the rights of others by initiating force or fraud against them.
Libertarianism has been broadly shaped by liberal ideas. Libertarians advocate the expansion of individual autonomy and political self-determination, emphasizing the principles of equality before the law and the protection of civil rights, including the rights to freedom of association, freedom of speech, freedom of thought and freedom of choice. They generally support individual liberty and oppose authority, state power, warfare, militarism and nationalism, but some libertarians diverge on the scope and nature of their opposition to existing economic and political systems.