教师是太阳底下最光辉的职业。
Teaching is the most glorious profession under the sun.
可持续性必须有利可图，否则它就无法持续。
如果是玫瑰，它总会开花的。
It is not enough to observe and experiment, theorize and calculate. One must also imagine.
我专注于未来，而非过去。
森林的真正价值不能仅用板英尺来衡量。