数学中最深刻的思想往往来自最简单的问题。
所以君子努力做事就会日渐强大,安于嗜欲就日渐苟且,恭敬庄重就日益繁盛。
大多数人都不是自己。他们的思想是别人的意见，他们的生活是模仿别人的生活，他们的恋爱只是引述。
The challenges of climate change demand urgent action from the scientific community.
A man is like a fraction whose numerator is what he is and whose denominator is what he thinks of himself. The larger the denominator, the smaller the fraction.
