To do great things is difficult，but to command great things is more difficult.

The great question which, in all ages, has disturbed mankind, and brought on them the greatest part of their mischiefs, has been, not whether there be power in the world, nor whence it came, but who should have it.

"To be useful was the best thing the old men ever hoped for themselves, and to be aimless was their worst fear."

成功绝非偶然。它是努力、坚持、学习、研究、牺牲，最重要的是热爱你所做的事情。

沟通中最重要的是听到那些没有说出来的话。