Some of his friends made a strenuous effort to penetrate the barrier he was erecting and found that underneath was still the friendly, deep thinking, brilliant mathematician.
Ang ilan sa kanyang mga kaibigan na ginawa ng isang mabigat na pagsisikap na maarok ang barrier siya ay erecting at natagpuan na sa ilalim ay pa rin ang friendly, malalim iniisip, napakatalino dalub-agbilang.