The stream of thought flows toward purposeful ends.
The act of writing is an act of courage.
The highest activity a human being can attain is learning for understanding because to understand is to be free.
追求数学知识是一段永无止境的旅程;总有更多的东西等待发现和理解。
"Empathy is the key to innovation, as it allows us to understand and address the real needs of people."