Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.

The last of human freedoms is the ability to choose one's attitude in any given set of circumstances.

农业是文明的基础，我们必须投资于它的未来。

Short-term gains at the expense of the environment will always lead to long-term losses.

至今一切社会的历史都是阶级斗争的历史，即剥削阶级和被剥削阶级之间、统治阶级和被压迫阶级之间斗争的历史。

在很小的时候我就知道人们会犯错误，你必须决定他们的错误是否大于你对他们的爱。