With his bright blue eyes and Van Gogh beard, Professor Fix has spent more than a decade in Taiwan all told, and has a Taiwanese wife. Whenever Fix begins to comment on Taiwan history or historical figures, not only does he fully display his power of memory and the fruit of long and arduous study, he speaks in an almost accent-free, pleasing Chinese.
清亮的藍眼珠、梵谷般的大鬍子，前後留台超過十幾年時間，加上娶了位台灣老婆，費德廉一開口品評台灣歷史事件和人物，不但記憶力和苦學累積的工夫盡展，用的更是幾乎全無口音的悅耳中文。