There was no immediate rush to learn the Unforgivable Curses; lacking sufficient magical power and the absolute resolve to cast them was one thing, but they didn't even know what the spells were yet.
Severus knew more about The Dark Lord than Camelia did. While serving as a professor's assistant brewing Potions, he had caught glimpses of what were said to be The Dark Lord's personal potion notes. The techniques and improvements to brewing found within left him in absolute awe, inspiring a deep yearning for such a master wizard.
Professor Slughorn had also taught The Dark Lord, and he always loved bringing up that name when mentoring Severus in potion-making, calling him the most talented student he had ever taught.
Chapter 49