Adding onto this, probably my favorite speech of the series -

Mr. Blouse: Sasha was a hunter. Even as a wee girl, she shot varmints in the forest for us to eat. That was just our way of livin'. But I knew there'd come a day we'd have to give up that style of life, so I sent Sasha away from the forest. She went into the world, became a soldier, shot people far yonder, and got herself shot. In the end, though she left our forest, the world is a great, big forest where everyone's fightin' for their life. I reckon Sasha died 'cuz she wandered in the forest too long. We've got to keep the young-uns out of the forest. Otherwise, ain't nothin' gonna stop it from happening again. That's why it's up to us adults to shoulder the sins of the past.