Locke: What do you suppose is in that cocoon, Charlie?
Charlie: I don't know, a-a butterfly, I guess?
Locke: No, it's much more beautiful than that. That's a moth cocoon. It's ironic butterflies get all the attention, but moths spin silk. They're stronger, they're faster--
Charlie: That's wonderful, but...
Locke (pointing at the cocoon): You see this little hole? This moth's just about to emerge. It's in there right now, struggling, it's digging its way through the thick hide of the cocoon. Now, I could help it: take my knife, gently widen the opening, and the moth would be free. But it would be too weak to survive. Struggle is nature's way of strengthening it.