The bond between a man and his profession is similar to that which ties him to his country; it is just as complex, often ambivalent, and in general it is understood completely only when it is broken: by exile or emigration in the case of ones country, by retirement in the case of a trade or profession.
ATTRIBUTION:
Primo Levi (19191987), Italian chemist, author. Ex-Chemist, Other Peoples Trades (1985, trans. 1989).