The chances that Alex was still missing anything he needed to learn about healing after reading through the Book of Boundless Healing were almost none. But it was never zero. So, just to double-check his own understanding of healing, he let Scarlet's mother explain what she could.
"To really understand healing, you have to start from the very foundation of it," she explained. "The best place to learn healing is not in any healing flower or in the flames of a Phoenix. The best place to learn about it is in yourself."
"Even without any pill or paste or additional aid, your body heals itself on its own. Even mortals, with nothing but some fruits, can heal themselves. It's not effective, and it takes a long time, but their bodies are capable of it. Everyone in this world is born with the capacity to heal themselves."