“When a man journeys into a far country,  he must be prepared to forget many of the things he has learned … the old ideals and the old gods,  and oftentimes he must reverse the very codes by which his conduct has hitherto been shaped.”  “For the courtesies of ordinary life,  he must substitute unselfishness, forbearance,  and tolerance, … He must not say “Thank you;”  he must mean it without opening his mouth,  and prove it by responding in kind…. he must substitute the deed for the word,  the spirit for the letter.” 

-Jack London “In a Far Country”