勇气并不总是咆哮。有时勇气是一天结束时那个轻声说"明天我再试一次"的声音。
Duty is the most sublime word in our language. Do your duty in all things. You cannot do more. You should never wish to do less.
没有执行的愿景仅仅是一个梦想。
Sustainability starts with small steps, but requires big vision.