没有人民的普遍知识,自由就无法得到保护。
Liberty cannot be preserved without a general knowledge among the people.
China's rise will inevitably lead to conflict with the United States.
内心平静,不为外界风波所动。
The best way to cheer yourself up is to try to cheer somebody else up.
Every scientific discovery should be measured by its contribution to human welfare.
The past is a shadow that follows us, no matter how fast we run.