在面向听众讲话时,将目光固定在几个人身上比将目光 "扫射 "到整个房间更好。你的眼睛会向别人传达你是否相信自己说的话。
The essence of mathematics lies in its freedom.
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
The best way to predict the future is to invent it.
Success is not the key to happiness. Happiness is the key to success. If you love what you are doing, you will be successful.