自由市场最重要的一个核心事实是,除非双方都受益,否则交易不会发生。
数学的进步不仅仅依靠个人的努力,而是通过几代人的集体工作。
The Vietnamese people deeply love independence, freedom, and peace. But in the face of a threat to their country's independence and freedom, the Vietnamese people would rather sacrifice everything to defend their homeland.