Libertarianism is a political philosophy based on the Non-Aggression Principle that seeks to maximize autonomy and freedom of choice, emphasizing political freedom, voluntary association, and individual judgment. Libertarianism encompasses a wide range of beliefs, ranging from laissez-faire capitalism to non-statist socialism and anarchism, but all libertarians share a skepticism of authority. A common symbol of libertarianism is the porcupine; it is an animal that will not harm anyone if left alone.