Human autonomy is the key concept of Enlightenment ideas. This passage relates to those ideas because Napoleon is refering to the importance of reason over beliefs. When he says "the souls of men proceed along different roads" he is also claiming that any religion is valid to feel close to the creator. In a sense Napoleon makes reference to secularization (the idea of religion and politics should be separated and that one's method of worship should be a private matter). That is why he claims that he could be Catholic, Muslim, or Jew.
You should cite the Eighth Ammendment because it prohibits the government from imposing cruel and unusual punishment on individuals,
Agriculture plays a crucial role in the rise and development of civilizations, since it allows for there to be a "food surplus"--meaning that people other than farmers can spend time and effort developing new skills and practicing new trades.