*frown*
Hudson, who was in his early thirties, frowned at D's statement. As a wizard, he knew the importance of Ego in their mastery. Without such an important variable, one cannot cast spells above 3rd tier. Thus he was completely unaware of the reason why D stated so. From the words, he can tell that the source was brimming with confidence.
"How can you say that?"
Hudson had to raise his doubts, even if he found the source confident. The existence of Ego was not an invention, but the revelation exposed through centuries old experimenting and analysing. For millennia, the existence of Ego was an unraveled mystery. To simply avoid it in the path of Mana mastery is highly unconventional and inappropriate.
