The text examines the legacy of the Enlightenment, a period characterized by a profound emphasis on the light of reason as a counter-reaction to previous ignorance and opposition to science. While acknowledging that reliance on reason was sometimes excessive, the author highlights its role in driving social reforms, progress, and enlightened governance. The era's critical spirit reached its peak with Immanuel Kant, who introduced the idea of reason critiquing itself. Although the Enlightenment faced criticism for occasional shallowness, ideological bias, or cynicism, its productive outcomes are significant. These include a fundamental change in the spiritual atmosphere, a focus on freedom, the establishment of methodical scientific approaches in the humanities, and the scientific transformation of theology. Ultimately, the document asserts that modern free scientific discourse is rooted in Enlightenment principles. Despite moving away from certain naive historical concepts, contemporary thought remains dependent on this critical foundation, where reason serves as the primary tool for human understanding and progress.