This is an excerpt of the US Declaration of Independence. And the United States goes on with its Constitution, which gets ratified in 1789, to articulate a Bill of Rights. And many will point to the Enlightenment as the inspiration for these ideas. Thomas Jefferson, who wrote the Declaration of Independence, cited figures like Locke as some of mankind's best thinkers. So at this early date, nations were at least writing these types of words into their Declarations of Independence, into their Constitutions. But despite that, the 20th century is one of the bloodiest centuries in human history. You have World War I, where roughly 17 million people die.