The only sensible ends of literature are, first, the pleasurable toil of writing; second, the gratification of one's family and friends; and lastly, the solid cash.

【释义】：言论应有明确的主旨，行动应遵循一定的方法，亲近他人一定要有恰当的方式。

粮食安全是国家安全的基石。

A legal system is a system of rules which are valid according to the system's own criteria of validity.