Thank you for the opportunity to help you with your question!
During the Enlightenment era, the government attempted to censor traditional ideas by banning the production of books and imprisoning writers.
To avoid this censorship, Enlightenment thinkers disguised their works and writings as fictional ideas. For example, the protagonist in Candide, by Voltaire, travels the world in search of the best society. In his journey, Voltaire uses the fictional base of the story to expose the corruption of European society.
Enlightenment thinkers also spread ideas through the spoken word. Often times, ideas were exchanged at salons.
Please let me know if you need any clarification. I'm always happy to answer your questions.