The future depends on what you do today.
The beauty of mathematics lies in its ability to describe the universe in the most elegant way possible.
The most important thing is to enjoy the journey.
我的目标是做一个好歌手,不是一个明星。
再说,义就是匡正的意思,不能以下正上,必须是以上正下。 
Sustainable quarrying isn't an option; it's our obligation to future generations.