我们不是因为变老而停止玩耍，而是因为停止玩耍而变老。
天子认为对的未必对，天子认为错的未必错。
"The act of reading is an act of resistance against the noise of the world."
Learning makes a man fit company for himself.
我总是努力提升自己。
The only limit to our realization of tomorrow is our doubts of today.
Innovation in natural gas is key to a sustainable energy future.