The only way to have a friend is to be one.

Music is the universal language of mankind.

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.

In mathematics, the simplest questions often lead to the most profound discoveries.

没有人是有极限的。

变革时期的领导力既需要远见，也需要做出艰难决定的勇气。