在今天和明天之间，有一段很长的时间；趁你还有精神的时候，学习迅速办事。

【释义】：礼节重在相互回应。送出礼遇而对方不回应，这是不合礼数的；接受了别人的礼遇却不回报，同样也是不符合礼的要求。

True loneliness is not being alone, but feeling lonely in a crowd.

If you're not failing, you're not pushing hard enough.

There are tracts in my life that are bare and silent. They are the open spaces where my busy days had their light and air.

无偿工作的价值在经济衡量中常常不可见，但它却是社会的支柱。

We are all of us made by what we have done, and what has been done to us.