Voldemort's desire to beat death and become immortal was also why he and Quirrell ended up slaying innocent unicorns. Drinking the blood of a unicorn would keep someone alive – even if they were an inch from death.
Prior to splitting up the group, Hagrid pointed out the unicorn blood on the ground. Harry and Draco eventually found a hooded figure (Voldemort) drinking blood from a slain unicorn; Draco ran away in terror, while Voldemort confronted Harry, only to be charged at by the centaur Firenze, causing him to flee.
In the words of centaur Firenze: 'The blood of a unicorn will keep you alive, even if you are an inch from death, but at a terrible price. You have slain something pure and defenceless to save yourself, and you will have but a half life, a cursed life, from the moment the blood touches your lips.
Quirrell tried to put up feeble resistance on occasion, but Voldemort was far too strong for him. Quirrell is, in effect, turned into a temporary Horcrux by Voldemort. He is greatly depleted by the physical strain of fighting the far stronger, evil soul inside him.
Near the end of his life, his reason for wearing the turban became clear. Quirrell had joined with Voldemort and agreed to allow Voldemort's fledgling body to latch on to the back of his head. It was only able to grow into a face, and used Quirrell for transportation and sustenance.
There is also a strange smell of garlic that hangs about the classroom; the Weasley twins insist that it is because Quirrell has stuffed his turban full of garlic to ward off vampires.
Originally Answered: Did Snape know that Quirrell was hosting Voldemort? No. Snape did not know Quirrell was hosting Lord Voldemort during the events of Book 1. He tried to stop Quirrell from acquiring the Sorcerer's Stone on Dumbledore's orders.
Quirrell didn't use the Killing Curse on Harry, because Voldemort said “use the boy” to get the Sorcerer's stone from the Mirror of Erised.
Voldemort intentionally made six Horcruxes, but when he used Avada Kedavra on Harry, he unintentionally created a seventh Horcrux. Instead of dying, Lily's love for Harry created a counter 'curse' known as Sacrificial Protection and saved Harry.
Snape and Quirrell taught together at Hogwarts at least one additional year prior to Philosopher's Stone, although Quirrell's employment history at Hogwarts is murky. Quirrell is described as a "young man" but his precise age is unknown, while Snape is canonically 31 at the beginning of the first book.
The most likely reason why Lord Voldemort's nose disappeared and he devolved into such an evil-looking creature is that as he dabbled deeper into the Dark Arts, his appearance gradually became as distorted as what remained of his twisted soul.
Voldemort's desire to beat death and become immortal was also why he and Quirrell ended up slaying innocent unicorns. Drinking the blood of a unicorn would keep someone alive – even if they were an inch from death.
Norbert is a Norwegian Ridgeback dragon that Hagrid had acquired as an egg from a mysterious, hooded stranger in the Hog's Head, who turned out to be Professor Quirrell.
Filch takes Harry, Hermione, and Ron to Professor McGonagall's office to be punished. She accuses them of concocting the whole dragon story to lure Malfoy out of bed and get him into trouble. As punishment, McGonagall deducts fifty points from Gryffindor for each of the three wrongdoers.
Voldemort's obsession with blood purity signifies his aim to rid the wizarding world of Muggle (non-magical) heritage and to conquer both worlds, Muggle and wizarding, to achieve pure-blood dominance.
Draco Malfoy's mother Narcissa was cold, cunning and devoted to the Dark Lord. But she was also a mother, which meant she was willing to risk everything to make sure her son was safe. When Harry survived Voldemort's Killing Curse for the second time, Narcissa pretended he was dead so she could get to Draco.
Though Harry encountered many opportunities that deemed Avada Kedavra necessary, it remains as one of the Unforgivable Curses Harry Potter never cast. For one, he viewed the spell as an immoral practice commonly used by users of the Dark Arts.
Voldemort wanted to humiliate Dumbledore, not kill him directly. Plus the story wouldn't allow it, the book would have been over so quickly. Voldemort was a dark lord that could have also been killed MANY times with the killing curse, but what story would there be if that happened?
Defeating The Dark Lord with his signature spell
Disarming is about defence, not murder. Voldemort was a killer, Harry was not. It was an important distinction for Harry, who had learned so much about Voldemort and seen first-hand the ways in which they were similar.
In order to conjure the avada kedavra curse, you have to want to kill your victim. We all know that Voldemort could easily kill a child without an ounce of remorse... but not Snape. Snape didn't want to kill Dumbledore, and this was why the spell was blue instead of the usual green.
Snape did not need to tell Dumbledore about Quirell because he already knew. It was Dumbledore who told Snape to keep an eye on Quirell because the former already had his suspicions. Snape was not able to accumulate solid proof but otherwise Dumbledore was well in the loop.
Voldemort Never Figured Out Snape Was A Spy
He openly despised some of his Death Eaters, even the loyal ones like Luscious Malfoy.