出自北齐·颜之推《颜氏家训·勉学》。不得,不能、不可。雌黄,矿物名,可作颜料,古代用以涂改文字,后引申为信口更改、随便乱说。没有读够一定数量的书,对前人的见解没有彻底了解,是不能随便乱下结论、乱发议论的。书要多读、话要谨慎;应当谦虚向学,不可妄自尊大。
"Memory is a way of holding onto the things you love, the things you are, the things you never want to lose."
Those who dream by day are cognizant of many things which escape those who dream only by night.
可追溯性不仅仅是问责制,更是讲述每次捕捞背后的故事。
君子作战虽然布阵,但还是以勇敢为本。 
(Physics is) a good framework for thinking....Boil things down to their fundamental truths and reason up from there.