Jacob probably felt that Johann was the more powerful mathematician of the two and, this hurt since Jacob's nature meant that he always had to feel that he was winning praise from all sides. Hofmann writes in:
Jacob malamang nadama na Johann ay ang mga mas malakas na dalubbilang ng dalawang at, ito nasaktan dahil Jacob ng kalikasan sinadya na siya ay palaging sa pakiramdam na siya ay nanalong lahat purihin mula sa gilid. Hofmann magsusulat sa: