Les Miserables, the musical, holds a special place among our favorites, and we have recently embarked on reading the book. This essay proved to be fascinating in that regard as it provides insights into the prevailing ideas in France during that era, which ultimately led to the revolution and more.
This was a period in modern western philosophy when the influence of the church had been steadily waning over the past couple of centuries (beginning with the Italian Renaissance), while the influence of science had been steadily rising. However, for a considerable time, the growth of the latter did not quite match the decline of the former.
One can observe this in the essay. Rousseau does not contend that liberty is a divine right. There is scarcely any mention of God in the essay, which was a refreshing change. Instead, he argues that the right is derived from nature. The problem, though, is that the knowledge at that time regarding how pre-historic men (whom he refers to as savages) lived was rather limited. Consequently, many of the assumptions he makes are not entirely accurate. He also makes broad statements without feeling the need to provide any evidence or offer an apology when unable to do so. For instance, he speculates on how language must have developed among men but offers no evidence to support his claim.
This is what I found captivating about the essay, although I might be completely off the mark. Perhaps the inspiration behind the philosophical thought's shift from God to nature is partly attributed to the encounter with new peoples (such as those in the Americas and the Caribbean) who were astonishingly different from anything the Europeans had hitherto witnessed? Rousseau, presuming these "savages" to be midway between pre-historic man and present-day Europeans, works backward to speculate on what men were like further back in the past, all the way to the "very beginning." Perhaps Rousseau was pondering, "If this is us, and that is them... perhaps there are others, even more distinct from us, with entirely different needs, wants, and value systems, at the very outset and a fundamental truth to be discovered there?"
All in all, this has undoubtedly piqued my interest enough to explore more enlightenment era philosophers.