处理一个不自由的世界的唯一方法是变得如此绝对自由，以至于你的存在本身就是一种反叛。
The universe we observe has precisely the properties we should expect if there is, at bottom, no design, no purpose, no evil and no good, nothing but blind, pitiless indifference.
If you want to be a great leader, you have to be a great listener.
The key to solving complex problems is to break them down into manageable pieces.
The study of quantum gravity is essential for understanding the early universe.