Unless you've been living in a jar, you've probably heard of the famously eccentric philosopher Diogenes, one of the founders of the Cynical school of philosophy. He took the teachings of Socrates to the absolute extreme, living like a dog which has neither possessions nor any intention to follow social norms. But he was not the first philosopher to champion the Cynic lifestyle, and certainly not the last.

https://ko-fi.com/nothingnew

Epicureanism, It's Not Just Hedonism!:    • Epicureanism: It's Not Just Hedonism!  
The Evolution of the Afterlife, Orphism to Christianity:    • The Evolution of the Afterlife: Orphi...  
Ancient Biography, Fact or Fiction?:    • Ancient Biography: Fact or Fiction?  

Sources:
https://iep.utm.edu/cynics/
https://plato.stanford.edu/entries/et...
https://en.wikipedia.org/wiki/Chreia
https://www.worldhistory.org/Crates_o...
https://iep.utm.edu/antisthenes/
https://www.academia.edu/35317849/B_L...
The History of Philosophy by A.C. Grayling

00:00 Introduction
02:36 Hellenistic Philosophy
05:51 Antisthenes
10:49 Diogenes
17:34 Crates & Hipparchia
21:42 The Influence of Cynicism
22:32 Comparing Jesus and the Cynics
32:15 Hellenistic Judaism
35:19 Jesus & Hellenism
37:39 St Paul & The Early Church Fathers