在科学领域，每一个被回答的问题都会引出新的问题，推动着发现的无限循环。
The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome of the historical process.
你的时钟无法走动是因为我。
Respect the laws of nature and follow them.
The sun himself is weak when he first rises, and gathers strength and courage as the day gets on.