人的喜怒哀乐的感情没有表现出来，叫做中；表现出来合乎法度，叫做和。达到中和，天地就各居自己的位置，万物也就生长了。
"The immune system is like a double-edged sword; it can fight cancer but also needs to be controlled."
It is best to act with confidence, no matter how little right you have to it.
The best way to be successful is to be persistent.