Rousseau is featured in the book's section dedicated to the 18th century and is highlighted as a pivotal figure during the Enlightenment period. His influential writings, such as "The Social Contract" and "Emile," challenged traditional social and political norms, emphasizing individual liberty and the concept of the "noble savage."
It's important to note that the Time Millennium edition is a collection of essays written by different authors. While Rousseau is featured as the representative figure for the 18th century, there are other important figures from this era who could have been chosen.