To live is to choose, and to choose is to renounce.
I don't believe in guilt, I believe in living on impulse as long as you never intentionally hurt another person.
可持续性不是潮流,而是唯一的前进道路。
The structure of the international system, not the intentions of individual states, is the primary determinant of state behavior.
Write a program as carefully as you write a letter.