For a brief moment we again see Augustus's desire to do something heroic as he and Hazel tour the Anne Frank house. Augustus is joking when he asks if there are any Nazis left he could bring to justice and says he and Hazel could team up to hunt down evil-doers, but it's also evident from his past actions that this type of heroism holds value for him. The other comments he makes as he and Hazel joke about this notion suggest why it might be so important to him. He says the stories of their exploits “will survive as long as the human voice itself,” which shows his yearning to have others consider his life important and to remember him after his death. Considered alongside how he sacrifices himself in video games and the fear of oblivion he admitted to in the support group early in the novel, it's evident that Augustus believes his life will have meaning only if his death comes as a sacrifice for a noble cause and his memory lives on after him. Given the very real possibility of his dying young, it's not surprising that he places so much value on being remembered, and with his penchant for symbolic and dramatic gestures, it also makes sense that he would want a glorious death.