幸福通过美德获得;它是人通过自己的意志获得的美好。
Happiness is secured through virtue; it is a good attained by man's own will.
We must learn from nature how to use resources efficiently.
最好的数学是简单的,但又不至于过于简单。
Without forgetting it is quite impossible to live at all.
It was like just before the sun goes to bed down on the bayou.There was a million sparkles on the river..