觀天下書未遍，不得妄下雌黃。
出自北齊·顏之推《顏氏家訓(xùn)·勉學(xué)》。沒有把天下所有的書讀個遍，就不要信口雌黃的發(fā)表觀點(diǎn)。
"Hope is a verb with its sleeves rolled up."
The art of doing mathematics consists in finding that special case which contains all the germs of generality.
The world is always in movement.
投資者應(yīng)警惕高費(fèi)用和復(fù)雜的產(chǎn)品。