'Those things don't really matter. I mean things like having no money and not having enough to eat. Even when you're practically starving it doesn't change anything inside you.'
'Doesn't it? I'll take your word for it. I should be very sorry to try.'

'Oh well it's beastly while it's happening of course; but it doesn't make any real difference; it's the things that happen inside you that matter.'
'Meaning?' said Mr Warburton.

'Oh things change in your mind. And then the whole world changes because you look at it differently.'