" He could quite quickly become detached from the nuances of common human emotion. Particularly if he was engaged in some aspect of a scientific problem or research. His work excluded any consideration for the feelings of those around him. And he rarely excused himself or justified his behavior. It was as if he was compelled to focus all his energy on one subject and was unaware that others did not follow his obsession. "

― Theresa Breslin , The Medici Seal