It's the invention of: work. What do people do that animals don't? Work. What does work mean: It means you sacrifice the present for the future. Why do you do that? Because you know that you're vulnerable, and because you're awake. From here on in, from this point forward, there's no return to unconscious paradise. I don't care how many problems you've solved so that today's okay. You have a lot of problems coming up. No matter how much you work, you're never going to work enough to solve all the problems. All you're going to do from here on in is be terrified of the future. That's the price of waking up. It's the end of paradise, and that's the beginning of history.