知足常乐者最富有，因为知足本身就是天然的财富。
He is richest who is content with the least，for content is the wealth of nature.
经验只是我们给错误取的名字。
The best architecture is humane.
Rest satisfied with doing well， and leave others to talk of you as they please.
Data without insight is just noise.
The true cost of coal must account for both its immediate value and its long-term impact on communities and ecosystems.
教师最重要的是一颗理解的心，它值得无限地尊崇。人们在回忆中赞赏才华横溢的教师，但感激曾触动自己的人类情感的教师。对于成长中的孩子、对于孩子的灵魂，功课是必须的，但至关重要的营养是人性的温暖。