Aries - Mischief Managed - Weasley Twins
Taurus - I'd rather die! I'd rather die than betray my friends! - Sirius Black
Gemini - Wait 'til my father hears about this! - Draco Malfoy
Cancer - I shouldn't have said that. - Rubeus Hagrid
Leo - I am the Chosen One - Harry Potter
Virgo - Now, if you two don't mind, I'm going to bed before either of you come up with another clever idea to get us killed. Or worse, Expelled! -Hermione Granger
Libra - Yer a wizard, Harry. -Rubeus Hagrid
Scorpio - Always - Severus Snape
Sagittarius - I solemnly swear that I am up to no good. - Weasley Twins
Capricorn - It's LeviOsa. Not LevioSA! - Hermione Granger
Aquarius - You're just as sane as I am. - Luna Lovegood.
Pisces - What exactly is the function of a rubber duck? - Arthur Weasley