How we cite our quotes: (Chapter.Paragraph)
Quote #4
"Eventually there won't be room for you here. [...] You can't come home." (1.73)
Just because Tom's family wants to support him, doesn't mean they're able to put a roof over his head. To be a part of the family, he has to pull his own weight.
Quote #5
"He'd have known he was dying and that he'd never be able to go home again. That he'd never see his family again." (2.21)
Here, Tom is doing his best to empathize with the ghast of the dead soldier. But he's also projecting his own fears. Tom has just left home, and he's the one who's really sad that he might never see his family again. Or that he might never truly be able to go home again.