当老人们种下他们知道自己永远不会坐在其下的树时,社会就会变得伟大。
A society grows great when old men plant trees whose shade they know they shall never sit in.
I believe that we are lost here in America, but I believe we shall be found.
通信技术的创新应聚焦于解决现实问题。
We need to focus on the actual outcomes of policies, not just their intended effects.