Think your little jokes'll help you on your deathbed?" she jeered. "Jokes? No,no, these are manners," replied Dumbledore.

Was it - was she making a real prediction?' Dumbledore looked mildly impressed. 'Do you know, Harry, I think she might have been,' he said thoughtfully. 'Who'd have thought it? That brings her total of real predictions up to two. I should offer her a pay raise.

Many prefer not to exercise their imaginations at all. They choose to remain comfortably within the bounds of their own experience, never troubling to wonder how it would feel to have been born other than they are.

He’ll accept anyone at Hogwarts, s’long as they’ve got the talent. Knows people can turn out okay even if their families weren’ . . .well . . . all tha’ respectable.

He might have been encased in a thick glass bubble, so separate did he feel from his three dining companions. It was a sensation with which he was only too familiar, that of walking in a giant sphere of worry, enclosed by it, watching his own terrors roll by, obscuring the outside world.

It's the ability to resist failure, in many ways, or use failure that often leads to the greatest success, isn't it?

Dumbledore raised his finger for silence, a silence which fell as though he had struck Uncle Vernon dumb.