Hazel: Even though you have freaking cancer, you are willing to give money to corporation for a chance to acquire even more cancer? Let me just assure you that not being able to breathe SUCKS. Totally disappointing. Totally.
Augustus: They don't kill you unless you light them. And I've never lit one. It's a metaphor, see: You put the killing thing right between your teeth, but you don't give it the power to do its killing. A metaphor.