The past is never dead. It's not even past.
世界上最好和最美丽的东西是看不见甚至摸不到的 - 它们必须用心去感受。
The said truth is that it is the greatest happiness of the greatest number that is the measure of right and wrong.
真正的热情不知道限制或障碍。
Mathematics knows no races or geographic boundaries; for mathematics, the cultural world is one country.
The only way to escape the mundane is to meticulously observe it.