幸福来自内心。

You have to grind when no one else is grinding so you can shine when no one else is shining.

法律不是规则的体系，而是原则的体系。

The task of economics is not only to interpret phenomena, but also to provide practical advice and policies for society.

翻译：强调了人与自然的相互依存关系，人的价值在于利用天地之功来养活自己。