A Patronus was, more or less, the strongest proof that a wizard possessed a sound mind and a normal sense of good and evil.
Those corrupted by Dark magic, or Dark wizards who had used Dark magic for prolonged periods and harbored nothing but vicious, extreme thoughts, could never summon a Patronus.
Because there was no longer any untainted ground in their hearts.
That was why Vaughn had brought up the Patronus Charm first.
Not only because it was difficult to master, but also because it was an excellent indicator.
At the very least, Old Dumbledore would feel more at ease after seeing it.
When he left the headmaster's office, Vaughn had an additional hefty tome in his hands: <A Journey Through the Past and Present of Memory Magic>.
The title was rather artsy. The person who wrote this book had to be a Ravenclaw.
On the way back to Slytherin, Vaughn could not wait to begin reading.
The book gave a detailed introduction to the branch of memory magic, recording everything from its history and development to the memory-related spells known in modern times.
Aside from the Memory Charm and Occlumency that Vaughn already knew, as well as the Legilimency he wanted to learn—
There were also the False Memory Charm, Sweet Dream Charm, Nightmare Charm, and more.
It also explored many spells from other fields that required the involvement of memory.
Alchemy alone included Pensieves, Remembralls, portrait creation, Automatic Quills, and so on. While it did not provide specific crafting methods, every part requiring the use of memory was recorded in detail.
"Even advanced Transfiguration requires memory? The process of turning an inanimate object into a living creature and granting it life is actually the process of infusing it with memories, using false memories to imitate a real