幸福是通过美德获得的，是人自己意愿获得的善。
I am always glad to think that my education was, for the most part, informal, and had its roots in the soil.
Every thought serves some biological purpose.
The future belongs to those who understand that doing more with less is compassionate, prosperous, and enduring.
A society grows great when old men plant trees whose shade they know they shall never sit in.