The best time to plant a tree was 20 years ago. The second best time is now.

宇宙、天地，有它自然的运行规律，是持久不变的，不会以人的意志为转移，它既不会因为有像尧那样的仁德君主而存在，也不会因为有像夏桀那样残暴的君主而消失。顺应自然规律来治理国家，就会获得吉祥；如果违背自然规律，就会招来灾难。

我们必须为下一代留下健康的水域。

Your self-worth is determined by you. You don’t have to depend on someone telling you who you are.

"The comeback is always stronger than the setback."

如今网络上到处都是免费的教育资源，真正稀缺的是对学习的渴望。