A: The Enlightenment is that human beings break away from their own immature state. Immature state means that they are powerless to use their own reason without the guidance of others. When the reason is not the lack of reason, but the lack of courage and determination to use it without the guidance of others, then this immature state is imposed on itself. Sapereaude！ Have the courage to use your own reason! This is the slogan of the Enlightenment.