Never to old to learn.
活到老,学到老.
I know that my future is not just a dream.
我知道我的未来不是梦.
Never say die.
永不放弃.
Knowlege is power.
知识就是力量.
Just do it.
向前冲.
A journey of a thousand miles begins with a single step.
千里之行,始于足下.
Better late than never.
只要开始,虽晚下迟.
Youth means limitless possilities.
年轻就有无限的可能.
这里还有许多：
http://www.mingrenmingyan.org.cn/guowaimingrenmingyan/
