The essence of mathematics lies in its freedom.
Safety protocols written in blood must be followed with the reverence of sacred texts.
出自北齐·颜之推《颜氏家训·勉学》。积累财富千万,也胜不过多读些书有用。古代有“书中自有黄金屋,书中自有颜如玉”的说法,读好书就能财源滚滚、美女满室。这句话意在强调读书以立世的重要意义。