Lightness is not just physical, but also psychological.
制药行业必须在利润与使命之间取得平衡——我们的使命是治愈。
最好的数学不仅正确，而且具有启发性。
The sun, with all those planets revolving around it and dependent on it, can still ripen a bunch of grapes as if it had nothing else in the universe to do.
