板块构造理论是地质学的统一理论。
世界确实充满了危险,其中有许多黑暗的地方;但仍然有许多美好的事物,尽管在所有土地上,爱现在与悲伤交织在一起,但它或许因此变得更加伟大。
Never underestimate the power of incremental improvements.
The quest for understanding is the noblest pursuit of the human spirit.
The man who speaks to you of sacrifice, speaks of slaves and masters. And intends to be the master.
反对森林砍伐的斗争是为人类的未来而战。