You mustn’t blame yourself for the way the boy’s turned out, Vernon. If there’s something rotten on the inside, there’s nothing anyone can do about it.

Proud?' said Harry. 'Are you mad? All those times I could've died, and I didn't manage it? They'll be furious...

Dumbledore paused, and although his voice remained light and calm, and he gave no obvious sign of anger, Harry felt a kind of chill emanating from him and noticed that the Dursleys drew very slightly closer together.
“You did not do as I asked. You have never treated Harry as a son. He has known nothing but neglect and often cruelty at your hands. The best that can be said is that he has at least escaped the appalling damage you have inflicted upon the unfortunate boy sitting between you.

I don't think you're a waste of space.

Yeah, but coming from Dudley that's like "I love you.

But...surely you know where your nephew is going?' she asked, looking bewildered.
'Certainly we know,' said Vernon Dursley. 'He's off with some of your lot, isn't he?
Right, Dudley, let's get in the car, you heard the man, we're in a hurry.'
Again, Vernon Dursley marched as far as the front door, but Dudley did not follow.
'Off with some of our lot?'
Hestia looked outraged. Harry had met the attitude before: witches and wizards seemed stunned that his closest living family took so little interest in the famous Harry Potter.
'It's fine,' Harry assured her. 'It doesn't matter, honestly.'
'Doesn't matter?' repeated Hestia, her voice rising ominously.
'Don't these people realise what you've been through? What danger you are in? The unique position you hold in the hearts of the anti-Voldemort movement?
'Er - no, they don't,' said Harry. 'They think I'm a waste of space, actually, but I'm used to -'
'I don't think you're a waste of space.'
If Harry had not seen Dudley's lips move, he might not have believed it.