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永遠不要低估小而持續的改進的力量。

The best time to work on your marriage is before you have one.

天下很多所謂可以做的事情，未必都是可以做的啊！?

"The past is a shadow that follows us, but it does not have to define us."

Perhaps as important is the relation between the existence of solutions to a competitive equilibrium and the problems of normative or welfare economics.