讓自己完全致力於需要動腦的活動，就是已經在人生取得成功。To be wholly devoted to some intellectual exercise is to have succeeded in life.

To be wholly devoted to some intellectual exercise is to have succeeded in life.
– Robert Louis Stevenson, Novelist
讓自己完全致力於需要動腦的活動，就是已經在人生取得成功。

– 羅伯特‧路易斯‧史蒂文森 (1850-1894) 蘇格蘭小說家、詩人及旅遊作家，全球知名小說《金銀島》(Treasure Island) 作者。