While Harry and Ron were refreshing their knowledge of Carl, Karl was in the first Defence Against the Dark Arts class of the semester.

In the past week, Quirrell's name has spread throughout Hogwarts.

Very good reputation.

Although Quirrell stuttered in class and wore a large turban due to his travels, which he said was a gift from an African prince, his solid foundation and unique insight into the dark arts made him widely acclaimed.

Percy and Carl, two excellent students, had discussed it privately, and both felt that Professor Quirrell's level was comparable to that of Professor Carlo, and Percy even thought that he was even higher than Professor Carlo.

The only regret is that Quirrell doesn't like his classmates asking questions, and whenever he comes into contact with people, his face will turn red, and his speech will be slurred, and he will die in a hurry.

This made many studious students feel sorry, but they had also heard of Quirrell's personality and had no choice but to accept it.

Unlike the weak dark creatures such as Red Hats and Grindillo in the first and second grades, from the third grade, they began to learn about some really powerful and widespread dark creatures, as well as learn some defensive charms against dark creatures.

For example, vampires, zombies, werewolves, etc.

This is also their last year of learning about dark creatures, and the portion of spells will increase greatly from next year.

As for the more powerful creatures of darkness, that's the advanced class.

Of course, the study of these well-known dark creatures is not now, but in the coming year.

Just understand.

"If, I mean if." After briefly explaining what he had learned for this school year, Quirrell said cautiously, "If you do come across these powerful dark creatures, the advice I can give is to run, run as far as you can."

He touched his head, seemingly immersed in the horrors of his summer vacation, "I was targeted by a vampire, but luckily I escaped back to Hogwarts."

"No, but," fear flashed across Quirrell's face, "I think he's going to come for me."

Everyone was too frightened by him to speak.

"Now, sit down." Quirrell adjusted his mood and said, "We're not going to talk about powerful creatures today."

He placed a large box on the podium, and the box shook suddenly, and the contents slammed into the top of the box.

Everyone looked at the box curiously.

Quirrell placed his hand on the box and patted it, "Quiet!"

The box immediately fell silent.

"The dark creature we're going to learn about today is the Boggart, turn the book to ······"

The sound of flipping books came from the classroom.

Quirrell carefully explained the main points of the Boggart, explaining the various characteristics of the invisible creature in simple terms, and the box in front of him stood honestly on the table, without any movement.

"This is a magical creature, it transcends life and death, and in the classification of magical creatures, the greatest characteristic of non-existence is beyond life and death, and the Boggart is our most common non-existence."

This is knowledge that is not available in books, and many people write it down in their notes.

Karl glanced at himself when Quirrell said "beyond life and death".

"Life and death are unavoidable facts for all living beings. But in the world of magic, 'non-existence has shown us the way, and of course, it is difficult.'" Quirrell's voice was lowered with some excitement, "It's quite difficult, because the 'non-being' beyond death has no concept of life in the first place, and we are already in the 'state of life.'"

"It's not a complete solution, though, 'Non-existence exists on emotions, and so does the magic of wizards, which has shown us the way.'"

Many of the students had stopped writing and they felt Quirrell say

It was so esoteric that they didn't understand what Quirrell was talking about.

However, they had already heard about Quirrell's condition, so they all listened silently, not daring to raise their hands to ask questions, for fear that the teacher would break the mark.

Karl narrowed his eyes.

Quirrell seemed to be hinting at something, but Carl wasn't sure.

Because it wasn't like Quirrell could tell, the connection between wizards and non-beings was a rather deep and unique insight, an idea that Carl had never heard or seen.

Quirrell, on the other hand, was a timid man who had always been cautious about the dark arts.

Carl was well aware that Quirrell studied the dark arts only to gain power, to prove that he was better than others.

Therefore, Quirrell is more willing to learn from those who are mature and can already judge the dangers, rather than delving into the dark arts and exploring the possibilities of the dark arts.

After all, the former only needs to learn, while the latter requires blood on his hands.

In the case of the Avada Spell, it was very easy to learn, but Carl didn't think that the dark wizard who invented the spell would be successful in studying it the first time.

So are all the experiments in the spell forming process harmless, and even replaced with chickens, ducks, and mice?

This is an inevitable problem when delving into the deepest depths of the dark arts, and Carl is ready to hurt others, but Quirrell never has one.

It can also be said that he knew that this kind of awareness was needed, so the cowardly Quirrell chose to avoid these things and choose to learn those things that were already ripe.

Could it be that when you traveled, you communicated with someone and learned some of the achievements of others? Karl suddenly thought of a possibility.

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If that's the case······

Carl had to admit that this was a rather genius idea, quite whimsical, and it made Carl feel as if he had just returned to the feeling of first being exposed to the dark arts under the guidance of Professor Carlo.

So magic can still be like this?

And it really doesn't seem to be unfeasible.

Karl's gaze was a little eager, and he was eager to ask Quirrell about the results after class.

After Quirrell finished talking about the expansion of the "Boggart", he glanced around the little wizard who was already a little confused, and the corners of his mouth hooked: "It seems that everyone is tired of listening, so let's make a game."

"Cedric!" He said, "What's the spell against the Boggart?"

Cedric stood up, didn't look at his notes, and said directly, "Funny, funny!"

Quirrell nodded, smiling slightly, "Very well, come up with your wand."

He stepped aside and let Cedric step up to the podium.

Fred, George, and other bright students' eyes lit up, and they had already guessed what was in that box.

"Looks like some of you have already guessed, yes there's a Boggart hidden here, it was supposed to be hidden in a closet at Hogwarts, and it took me a while to find it and move it to this chest." Quirrell said proudly, "This is not an easy task, I dare say, the entire castle, there are many people who can destroy the Boggart, but if you catch the Boggart and make it obedient, except for Dumbledore, maybe only I can do it."

Everyone screamed, and their startled voices made Quirrell even more proud.

"Then, Cedric, open the box." Quirrell swept around, motioning for everyone to be quiet, "We don't have a lot of time, I'm not going to let everyone try it, only the best kids will get this reward."

I'm not completely talking about the transformation of the wizard mentioned in it into "non-being", in fact, if you understand Voldemort, you will find that he is indeed very close to "non-existence, non-existence is the concept mentioned by Rowling, you can simply understand that the magic elves that rely on emotions to produce are not existent, and the Silent and Entity Patronus can actually be classified here."

Can fly (non-beings can fly, and when the original is flying, it is also very similar to non-existence), death

Later, he became a geist and thus transcended the concept of death (which is due to the Horcrux), spreading fear, and even being sensed by others when his name was pronounced.

The original book said that he had experienced several "evil" transformations and gradually lost his human appearance, my personal opinion is that these (including the magic that can fly in front of him, Horcruxes, spells with names, etc.) are all part of his approach to "non-existence", and Voldemort's final complete form should be to rely on the "name" and the "fear" it represents to "exist", and he is beyond life and death, which is also in line with his hope of "conquering death".

Of course he didn't finish it, but only some of the magic that enabled him to mimic a part of the 'non-being'.

The Boggart, or 'non-being', is really hard to manipulate by force, because they are disembodied.

In the original book, Lupin could only apply to bring the students to the cabinet for everyone to practice, and if he could really catch the thing, he wouldn't have to do it at all.