If you are in Gyaros, do not let your mind dwell upon life at Rome; do not think about the pleasures offered to you when living in Rome, and all that would reward your return. Instead, be intent on discovering how the man who lives in Gyaros can live in Gyaros like an inspired man. And if you are in Rome, do not let your mind reflect upon life in Athens, but learn how to live in Rome.

Epictetus (55 – 135 A.D.)