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。

I am not young enough to know everything.

The world is beautiful, but it has a disease called man.

我认为最好的学习方法就是实践。

Life is not a series of gig lamps symmetrically arranged; life is a luminous halo, a semi-transparent envelope surrounding us from the beginning of consciousness to the end.

"The world is full of obvious things which nobody by any chance ever observes."

我不会让任何人夺走我的幸福。