经济发展理论研究的是经济系统如何产生不断改变它的力量。

Never confuse a single defeat with a final defeat.

To live is the rarest thing in the world. Most people exist, that is all.

Efficiency comes from meticulous management and continuous improvement.

Never underestimate the power of collaboration.

译文：上天虽有好生之德，也难以拯救一心求死的人，人能造福行善，就是避免灾祸的大功德。赏析：人生最大的悲哀莫过于内心已死，失去了斗志。失败不可怕，我们要善于在失败中重整旗鼓，继续向前。人多做好事，就是种善因，那么必将结善果。

学习是避免陷入人生困境的唯一途径。