The periodic table hasn't changed, but how we use its elements must.
"The beauty of science lies in its ability to reveal the unknown."
书籍是飞机，是火车，是道路。它们是目的地，也是旅程。它们是家。
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。