His physics tutor, Robert Berman, later said, "It was only necessary for him to know that something could be done, and he could do it without looking to see how other people did it."
Guru fisikanya, Robert Berman, kelak mengungkapkan, "Ia perlu tahu bahwa ia dapat melakukan sesuatu, dan ia dapat melakukannya tanpa mempelajari cara yang digunakan orang lain."