愉快是健康的最佳促进者，对心灵和身体同样友好。
Cheerfulness is the best promoter of health and is as friendly to the mind as to the body.
Your time and space are limited. Remove， give away， throw out things in your life that don‘t spark joy any longer in order to make room for those that do.
说出口的，就是结束且完成的。
The joy of chemistry is in seeing the invisible become visible.