Only those who will risk going too far can possibly find out how far one can go.
缺乏多样性的森林就像只有一本书的图书馆。
Everything is a learning process: any time you fall down, you get up and you learn from it.
Those who make peaceful revolution impossible will make violent revolution inevitable.
In the end, we are all alone, and that is the fundamental condition of human existence.
煤炭的未来在于更清洁的技术和更智能的资源管理。