Avicenna

“Beware that, when fighting monsters, you yourself do not become a monster... for when you gaze long into the abyss. The abyss gazes also into you.”
― Friedrich W. Nietzsche

“Words are, in my not-so-humble opinion, our most inexhaustible source of magic. Capable of both inflicting injury, and remedying it.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“Do you know why I admire you, Newt? More, perhaps, than any man I know? (off NEWT’S surprise) You don’t seek power or popularity. You simply ask, is the thing right in itself? If it is, then I must do it, no matter the cost.”
― J.K. Rowling, Fantastic Beasts: The Crimes of Grindelwald: The Original Screenplay

“You care so much you feel as though you will bleed to death with the pain of it.”
― J.K. Rowling, Harry Potter and the Order of the Phoenix