"Innocence always calls mutely for protection when we would be so much wiser to guard ourselves against it: innocence is like a dumb leper who has lost his bell, wandering the world, meaning no harm."

因此，显而易见的是...

The boy and his heart had become friends, and neither was capable now of betraying the other.

 The world is a stage, and each person is an actor.

和平不是免费的，需要不断努力维护。

The harder you work, the luckier you get.