Here are the quotes:

"Happiness can be found, even in the darkest of times. If only, one remembers to turn on the light." -Albus Dumbledore

"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."
-Sirius Black

"And now, Harry, let us step into the night, and pursue that flighty, temptress adventure." -Albus Dumbledore

"You're just as sane as I am." -Luna Lovegood

"Dobby is free!" -Dobby

"Because that's what Hermione does. When in doubt, go to the library!" -Ron Weasely

"Things have a way of turning up in the end. If not always in the way we expect. I think I'll have some pudding."
-Luna Lovegood

"Students out of bed! Students in the corridors!" -Argus Filch

"My dear, you have.......... The Grim!" -Sybill Trelawney

"Always." -Severus Snape

"See, they're currently in alien terrain, surrounded by millions of the most vicious creatures on the planet, humans."
-Newt Scamander

"My philosophy is that worrying means you suffer twice." -Newt Scamander