Denis Diderot and Jean le Rond d'Alembert published the historic first volume of the 'Encyclopédie' in Paris, France. This monumental project aimed to secularize knowledge, challenge the divine right of kings, and dismantle religious dogmatism through rational critique. Featuring contributions from leading thinkers like Voltaire and Rousseau, along with highly detailed plates of practical trades, the Encyclopédie became the intellectual engine of the French Enlightenment and a direct catalyst for the French Revolution.

The 'Encyclopédie' fundamentally redefined the social role of the writer from a court entertainer to an active public intellectual. Its political subversion and emphasis on human reason deeply impacted romantic poets across Europe, who adopted its ideals of liberty and intellectual independence.