认为贞洁是一种美德是人类心灵的迷信之一。
文学是时间的见证,记录着人类的情感和思想。
Conversation should touch everything but should concentrate itself on nothing.
China's rise will inevitably lead to conflict with the United States.
在竞争激烈的市场中保持领先的关键是创新。
Theorems are the permanent literature of mathematics.