  The word "cosmopolitan" is often used in a vernacular sense to refer to places where people of various ethnic, cultural and/or religious backgrounds live nearby and interact with each other , diverging from the strict definition of the concept . Philosophical roots Diogenes Cosmopolitanism can be traced back to Diogenes of Sinope (c. 412 B.C.), the founding father of the Cynic movement in Ancient Greece.
<clarity>   The word "cosmopolitan" is often used in a vernacular sense to refer to places where people of various ethnic, cultural and/or religious backgrounds live nearby and interact with each other , diverging from the strict definition of the concept . Philosophical roots Diogenes Cosmopolitanism can be traced back to Diogenes of Sinope (c. 412 B.C.), the founding father of the Cynic movement in Ancient Greece.
 The word "cosmopolitan" is often used in a vernacular sense to refer to places where people of various ethnic, cultural and/or religious backgrounds live together and interact with each other , diverging from the strict definition of the concept . Philosophical roots Diogenes Cosmopolitanism can be traced back to Diogenes of Sinope (c. 412 B.C.), the founding father of the Cynic movement in Ancient Greece.