International politics is a ruthless and dangerous business, and it is foolish to expect states to behave according to moral principles.
追求数学真理就是追求美、优雅和简洁。
My life is music, and music is my life.
The future of energy is not about choosing between coal and renewables, but about finding the right balance.
Sometimes, silence is more powerful than words.
唯一真正的智慧在于知道自己一无所知。
Sometimes life hits you in the head with a brick. Don't lose faith.