By revealing the Potters' hiding place, Peter destroyed the lives of all of his friends:
Voldemort's first defeat took place on Halloween, October 31, 1981 at the hands of an infant Harry Potter. This led to Harry being known as "The Boy Who Lived". Shortly thereafter, all of his remaining Death Eaters were imprisoned, killed, or acquitted, bringing the war to an end.
Voldemort is motivated by immortality, superiority, racial cleansing, and more than a bit of self-hatred. Many of these things are shown in earlier books in the series, but become crystallized in the sixth.
1 Voldemort's Arrogance Was His Downfall
Perhaps Voldemort's biggest mistake was thinking he was invincible. He was extremely arrogant and believed himself to be superior to everyone around him. Ever since he was a child in the orphanage, Voldemort thought he was better than everyone else.
Voldemort apparently believes nothing is worse than death; perhaps his greatest weakness is his inability to love. This is because his mother, Merope Gaunt, gave Tom Riddle Senior (Voldemort's father) a love potion. Because Voldemort was conceived under a love potion, he isn't able to feel or express love in his life.
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.
Voldemort had opportunities to make different choices, yet his snake-like eyes were fixed on one goal: a world where magic is might and pure-bloods reign supreme. It's a world that glories in cruelty, sees death as failure yet values life lightly, and denies love, kindness and tolerance.
Voldemort chose Harry because he saw more of himself in Harry than he did in Neville. Voldemort despised his parents because his father was a muggle and his mother was unexceptional and, in his eyes, pathetic.
As mentioned in the book, Dumbledore was 'the only one he ever feared'. Deep down, Voldemort knew that Dumbledore was more powerful than him. He had superior magical capability and possessed important information about Voldemort. As they say, knowledge is power!
Voldemort always feared death – as an 11-year-old he scorned his mother for succumbing and dismissed it as weakness – and his Horcrux journey was all about achieving immortality, keeping himself alive with no thought for anyone else or even his own soul.
In the end, both were essential to Voldemort's downfall, fulfilling the possibility that both Harry and Neville were, in fact, the Chosen One. While Harry delivered the final blow to destroy Voldemort, Neville destroyed the final Horcrux which allowed Harry to end Voldemort.
Barry Winkel far surpasses any other known Harry Potter character who is not some sort of creature, and as noted in The Philosopher's Stone, lived to be 755 at least.
Riddle is 9 years OLDER than McGonagall.
Voldemort's past, as revealed by the books, is shrouded in mystery and guesswork. In fact, at the beginning of the series, barely anyone but Dumbledore and Hagrid knew that Voldemort was the charming, successful Tom Marvolo Riddle.
While they later mastered an array of spells and techniques, it was how they as humans utilized these skills that made them powerful. While Harry may have lost some of those inherent magical abilities when Voldemort's soul was destroyed, he didn't lose his command of the abilities he had already accessed.
The first is that the Resurrection Stone brought Harry back after Voldemort cast Avada Kedavra. The second is that when Voldemort restored his body using Harry's blood in Goblet of Fire, he became a Horcrux of Harry.
Who can cast the Patronus charm? The Patronus is a form of advanced magic which even the most qualified wizards can struggle with. Harry Potter was one of the youngest wizards to cast a corporeal Patronus, having been taught by Professor Lupin at the tender age of 13.
Herpo the Foul, one of the first Dark wizards, the first person to create a Horcrux and hatch a basilisk egg, created the Unforgivable Curses.
Rowling said in an interview that Dumbledore was about 150 years old. However, on her website, she states that Dumbledore was born in 1881, making him either 115 or 116 at the time of his death.
When Harry wrestles Draco's “everyday” wand out of his hand at the Malfoy's mansion, he conquers Draco, and therefore the Elder Wand — hidden in Dumbledore's tomb at the time — transfers its allegiance to Harry. Rowling said her American editor suggested the moment when Harry conquers Draco should be more dramatic.
Ultimately, Dumbledore's death at Snape's hands was a win for everyone involved. The headmaster got the respectful death he wanted, Snape was able to prove his loyalty to the Death Eaters, and Malfoy was saved from Voldemort's wrath.
Due to his humiliation in the Triwizard Tournament, Cedric eventually becomes a Death Eater and kills Neville Longbottom. Due to Neville's death, the final Horcrux Nagini was never destroyed, and as a result Voldemort is never defeated, kills Harry and takes over the Wizarding World.
Voldemort unwittingly makes himself a Horcrux for Harry, although it might not be called that, by taking his blood earlier. In taking Harry's blood to regenerate himself, Voldemort ensures that Harry will not die if Voldemort kills him. The blood ties Harry to Voldemort's life, therefore Harry will live.
Albus Dumbledore
It is not certain what the specific fear is as he is not fearing the death of his sister as she is already deceased and it is suggested that Dumbledore fears that it was him who directly killed his sister in the conflict or that he fears the loss of control that lead to his sister's sudden death.