Avada Kedavra Quotes

“Draco, do it, or stand aside so one of us -" screeched the woman, but at that precise moment the door to the ramparts burst open once more and there stood Snape, his wand clutched in his hand as his black eyes swept the scene, from Dumbledore slumped against the wall, to the four Death Eaters, including the enraged werewolf, and Malfoy.
"We've got a problem, Snape," said the lumpy Amycus, whose eyes and wand were fixed alike upon Dumbledore, "the boy doesn't seem able -"
But somebody else had spoken Snape's name, quite softly.
"Severus ..."
The sound frightened Harry beyond anything he had experienced all evening. For the first time, Dumbledore was pleading.
Snape said nothing, but walked forwards and pushed Malfoy roughly out of the way. The three Death Eaters fell back without a word. Even the werewolf seemed cowed.
Snape gazed for a moment at Dumbledore, and there was revulsion and hatred etched in the harsh lines of his face.
"Severus ... please ..."
Snape raised his wand and pointed it directly at Dumbledore. "Avada Kedavra!”
― J.K. Rowling, Harry Potter and the Half-Blood Prince

“A red-gold glow burst suddenly across the enchanted sky above them as an edge of dazzling sun appeared over the sill of the nearest window. The light hit both of their faces at the same time, so that Voldemort's was suddenly a flaming blur. Harry heard the high voice shriek as he too yelled his best hope to the heavens, pointing Draco's wand:
"Avada Kedavra!"
"Expelliarmus!"
The bang was like a cannon blast, and the golden flames that erupted between them, at the dead center of the circle they had been treading, marked the point where the spells collided. Harry saw Voldemort's green jet meet his own spell, saw the Elder Wand fly high, dark against the sunrise, spinning across the enchanted ceiling, spinning through the air toward the master it would not kill, who had come to take full possession of it at last.”
― J.K. Rowling, Harry Potter and the Deathly Hallows

“Mad Eye' Moody on the Avada Kedavra curse: "Not nice," he said calmly. "Not pleasant. And there's no counter curse. There's no blocking it. Only one known person has ever survived it, and he's sitting right in front of me.”
― J.K. Rowling, Harry Potter and the Goblet of Fire