The real moat is users' dependence on you.
Sustainability isn't a department—it's how we do business every day.
You have to love before you can be relentless.
挑战让生活变得有趣;克服挑战让生活变得有意义。
凡是圣人制造的这些东西,无一不是有益于实用才去做的,所以使用财物不浪费,民众能够不劳苦,他兴起的利益太多了。