He was being persecuted by the Catholic Church for his beliefs, and he stood on the bedrock principle that, you know, I will not always agree with what you have to say, but I will die to protect your right to say it. So Voltaire is freedom of speech. So we're going to stop all of this right now. Scientific revolution, right? Enlightenment, starting with Bacon and the scientific method, and then flowing into the political world of Hobbes and Locke, and then going into how government should work under Montesquieu, Rousseau, and Voltaire. And that will pretty much do it. But this is the theme of change, the theme of changing points in world history.