A society grows great when old men plant trees whose shade they know they shall never sit in.
永远不要停止学习，因为世界永远不会停止变化。
"Writing is easy: all you do is sit staring at a blank sheet of paper until drops of blood form on your forehead."
Innovation in natural gas is key to a sustainable energy future.
When you have to kill a man it costs nothing to be polite.