The cause of light is not in the colors， but in the light.
"To live is the rarest thing in the world. Most people exist, that is all."
你无法预测，但你可以准备。
数学是逻辑思想的诗歌。
最平凡的生活中可能包含着非凡的故事。
The fundamental point in fabricating a chain reacting machine is of course to see to it that each fission produces a certain number of neutrons and some of these neutrons will again produce fission.