Kant argues that enlightenment involves humans emerging from self-imposed immaturity through courageously using their own understanding rather than relying on external guidance. He claims most people remain willingly immature due to laziness and find it easier to let others think for them through books, pastors, physicians, etc. Guardians have ensured the public sees maturity as dangerous by making them dependent on authority. True enlightenment only requires freedom of public reason and debate on all matters, which advances progress, while private reason may be restricted to maintain order. The 18th century represents an age of enlightenment, not complete enlightenment, as obstacles to independent thought are gradually diminishing.