世界是一个舞台,我们都是演员。
睡眠是好的,死亡更好;但当然,最好的事情是从未出生。
At every crossroads on the path that leads to the future, tradition has placed 10,000 men to guard the past.
The great tragedy of Science—the slaying of a beautiful hypothesis by an ugly fact.  
循环经济原则不是可选的,它们对生存至关重要。