"That is a complicated question," Aibghalien said. "There is, to begin with, a difference between wizardry and sorcery, although the spells are exactly the same and both are arcane magic. Sorcery is inborn. Anyone with immortal blood, in a small or large amount, may have the gift, though it does not express itself outside of the elven people frequently even in those who meet that criteria. Wizardry, which is what I practice, is learned. Anyone can learn it."