任何真正新颖的东西都是在一个人的青年时期发明发现出来的，当一个人变得更有经验，更有名，也更顽固。
The natural price of labor is that price which is necessary to enable the laborers, one with another, to subsist and to perpetuate their race, without either increase or diminution.
The healthy social life is found when in the mirror of each human soul the whole community finds its reflection, and when in the community the virtue of each one is living.
生活的秘诀在于给予。