安全困境是国际政治的一个基本特征，因为国家增加自身安全的努力往往会降低其他国家的安全。
The security dilemma is a fundamental feature of international politics, as states' efforts to increase their own security often decrease the security of others.
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, not afraid to lose their lives, to defend the independence and freedom of their homeland.
我们肩负着对未来的责任。
富有的人不是拥有很多的人，而是给予很多的人。
The greatest enemy of knowledge is not ignorance, it is the illusion of knowledge.
Theoretically there is a perfect possibility of happiness: believing in the indestructible element within oneself, and not striving towards it.
我们读的书和我们交的朋友一样重要。