Penn’s lines are:

1. Human beings are stupid creatures who cannot understand each other no matter what.

2. It is too superficial to indulge in peace like this.

3. Those who do not understand pain will not understand true peace.

4. The so-called battle is accompanied by death, scars and pain on both sides.

5. If you kill someone, you will be killed. Hatred will closely connect the two.

6. You think you are the protagonist of this world, and you also think that the protagonist is far from death.

7. Only in pain can you know how the other person feels.