The Histories by Herodotus
“If anyone, no matter who, were given the opportunity of choosing from amongst all the nations in the world the set of beliefs which he thought best, he would inevitably—after careful considerations of their relative merits—choose that of his own country. Everyone without exception believes his own native customs, and the religion he was brought up in, to be the best.”
You're culture may be the best to you, but don't let that get you into trouble! Learn to understand cultures other than your own and never offend a stranger's culture again!
For the person who's ever felt confused by someone else's behavior, Herodotus offers up this remarkable work. Become a more effective leader and communicator by studying the cultures of the world.
You'll learn about countless other cultures, and what it is that makes each one unique. Even more importantly, you'll learn how to bridge the gaps between the cultures.
Herodotus shows the reader the importance of observing other cultures. He then shows us how to use observations to draw conclusions about cultures that seem strange and foreign.
Even more important than the specifics there are to learn about cultures, Herodotus shows us that through careful studying, we can become better diplomats. Through your education on cultural differences, you'll be a stronger, more respectable leader.
"After reading this amazing piece of literature, even I feel informed about other cultures." -Donald Trump