在最低阶层中保存知识的手段对公众来说比国家中所有富人的所有财产都更重要。
The preservation of the means of knowledge among the lowest ranks is of more importance to the public than all the property of all the rich men in the country.
On earth there is nothing great but man；in the man there is nothing great but mind.
未来不是我们进入的东西。未来是我们创造的东西。
置身于是非之外，评断是非才能客观；置身于利害之外，才能看清利害的变化。
每一刻都是新的开始。