过去总是在我们的生活中存在，塑造着我们的未来。
The initial conditions of the universe are a profound mystery, and inflation offers a possible explanation for why the universe looks the way it does.
Lisp is worth learning for the profound enlightenment experience you will have when you finally get it; that experience will make you a better programmer for the rest of your days, even if you never actually use Lisp itself a lot.