A good first impression can work wonders

I was supposed to be waiting up here when you got back, only your Phoenix lot got in the way...” “Yes, they do that,” said Dumbledore.

Brains like that, you could be a Death Eater, son.

Yes, Harry Potter!” said Dobby at once, his great eyes shining with excitement. “And if Dobby does it wrong, Dobby will throw himself off the topmost tower, Harry Potter!” “There won’t be any need for that,” said Harry hastily.

Remus Lupin was supposed to be on the H.I.V. metaphor. It was someone who had been infected young, who suffered stigma, who had a fear of infecting others, who was terrified he would pass on his condition to his son. And it was a way of examining prejudice, unwarranted prejudice towards a group of people. And also, examining why people might become embittered when they're treated that unfairly.

Only the difference between truth and lies, courage and cowardice.

We've all got both light and dark inside us. What matters is the part we choose to act on. That's who we really are.