由于说话的人不同，那么人们心中的看法就变化了。“智子疑邻”，地位不同，关系不同，时间不对，需谨言慎行。
The end of wisdom is to dream high enough to lose the dream in the seeking of it.
Freedom is the right to tell people what they do not want to hear.
A society grows great when old men plant trees whose shade they know they shall never sit in.