释义：与敌人交战之前，必须仔细分析和了解敌人的情况，然后才能制定作战计划和出兵，以确保行动的成功。

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

Life is like a box of chocolates, you never know what you're gonna get.

在沉思中发现真相。