Never stop learning because the world never stops changing.
永远不要停止学习，因为世界永远不会停止变化。
"The only limit to our realization of tomorrow will be our doubts of today."
The only thing that is certain is uncertainty.
The division of labor is limited by the extent of the market.
我不是那种会让对过去的热爱减少的人。
你不由你的过去定义。