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主要的義務規則是那些要求或禁止某些行為的規則。

可持續增長需要在技術和人才兩方面都進行投資。

The most effective way to destroy people is to deny and obliterate their own understanding of their history.

A man lies the most when he lies to himself.

摧毀資本主義制度的最好方法是敗壞其貨幣。