过去并非死寂之地，穿越它绝非徒劳之举。
"The past is not dead ground, and to traverse it is not a sterile exercise."
"I don't think about the past. I focus on the present and the future."
The spread of liberal democracy around the world is not inevitable, but it is the most likely outcome of the historical process.
Liberty cannot be preserved without a general knowledge among the people.
解决问题仅仅意味着以某种方式表示它，以使解决方案变得透明。
The key to risk management is prevention and early warning.