一本书是世界的一个版本。如果你不喜欢它，忽略它；或者提供你自己的版本作为回报。
"A book is a version of the world. If you do not like it, ignore it; or offer your own version in return."
The initial conditions of the universe are a profound mystery, and inflation offers a possible explanation for why the universe looks the way it does.
I believe in art as a form of education.
Sustainable development is not a slogan, but a corporate responsibility that must be practiced.
同一元素的原子在质量和性质上是相同的。