Who on Earth is Diogenes of Sinope?

“Dogs and philosophers do the greatest good and get the fewest rewards.”

“He has the most who is content with the least.”

“I threw my cup away when I saw a child drinking from his hands at the trough.”

“In a rich man's house there is no place to spit but his face.”

“It takes a wise man to discover a wise man.”

“No man is hurt but by himself.”

“The foundation of every state is the education of its youth.”

“What I like to drink most is wine that belongs to others.”