Diogenes of Sinope
Diogenes of Sinope (in short, Diogenes) was an Ancient Greek philosopher. His birth place is Sinope (in modern day Sinop, Turkey). He was born about 412 BC. Some people say he was born about 399 BC. He died in 323 BC at Corinth. There is a book by Diogenes Laërtius. The book tells us that Diogenes of Sinope died on the same day on which Alexander the Great died at Babylon. He was a founder of the philosophy called cynicism. He is also considered to be the first to use the word "cosmopolitan".