生活的习惯塑造灵魂，灵魂塑造面容。

Natural experiments can provide valuable insights into economic questions.

法律是在国家权威强制保护下的社会生活条件的总和。

我从不考虑未来。它来得已经够快了。

坚持志向就像心痛一样，心思全在痛处，哪有时间说闲话、管闲事。

Law is not a system of rules, but a union of primary and secondary rules.

Sustainability is not just a buzzword; it's a commitment to future generations.

当你改变时，世界也会改变。