Perry's Index to the Aesopica
Fables exist in many versions; here is one version in English:
Aesop's Fables. A new translation by Laura
Oxford University Press (World's Classics): Oxford, 2002.
APOLLO AND THE SNAKE
A creeping snake who had been stepped on by many people made his way to the
temple of Apollo and went inside. Apollo immediately explained to the snake,
'If you had simply killed the first person who stepped on you, no one would
ever have dared to step on you again!'
The story shows that if people who have previously committed a crime are
swiftly punished, then others will become afraid on their account.
cover, with new ISBN, published in 2008; contents of book unchanged.
Perry 198: Gibbs (Oxford) 172 [English]
Perry 198: Chambry 291 [Greek]
Perry 198: Syntipas 18 [Greek]
You can find a compilation of Perry's index to the Aesopica in the gigantic appendix to his
edition of Babrius and Phaedrus for the Loeb Classical Library
(Harvard University Press: Cambridge, 1965). This book is an absolute must for anyone interested
in the Aesopic fable tradition. Invaluable.