Aesop's Fables - Androcles

A slave named Androcles once escaped from his master and fled
to the forest. As he was wandering about there he came upon a
Lion lying down moaning and groaning. At first he turned to flee,
but finding that the Lion did not pursue him, he turned back and
went up to him. As he came near, the Lion put out his paw, which
was all swollen and bleeding, and Androcles found that a huge
thorn had got into it, and was causing all the pain. He pulled
out the thorn and bound up the paw of the Lion, who was soon able
to rise and lick the hand of Androcles like a dog. Then the Lion
took Androcles to his cave, and every day used to bring him meat
from which to live. But shortly afterwards both Androcles and the
Lion were captured, and the slave was sentenced to be thrown to
the Lion, after the latter had been kept without food for several
days. The Emperor and all his Court came to see the spectacle,
and Androcles was led out into the middle of the arena. Soon the
Lion was let loose from his den, and rushed bounding and roaring
towards his victim. But as soon as he came near to Androcles he
recognised his friend, and fawned upon him, and licked his hands
like a friendly dog. The Emperor, surprised at this, summoned
Androcles to him, who told him the whole story. Whereupon the
slave was pardoned and freed, and the Lion let loose to his native
forest.

Gratitude is the sign of noble souls.

Aesop's Fables - The Woodman and the Serpent

One wintry day a Woodman was tramping home from his work when
he saw something black lying on the snow. When he came closer he
saw it was a Serpent to all appearance dead. But he took it up
and put it in his bosom to warm while he hurried home. As soon as
he got indoors he put the Serpent down on the hearth before the
fire. The children watched it and saw it slowly come to life
again. Then one of them stooped down to stroke it, but the
Serpent raised its head and put out its fangs and was about to
sting the child to death. So the Woodman seized his axe, and with
one stroke cut the Serpent in two. "Ah," said he,

"No gratitude from the wicked."

Aesop's Fables - The Wolf and the Crane

A Wolf had been gorging on an animal he had killed, when
suddenly a small bone in the meat stuck in his throat and he could
not swallow it. He soon felt terrible pain in his throat, and ran
up and down groaning and groaning and seeking for something to
relieve the pain. He tried to induce every one he met to remove
the bone. "I would give anything," said he, "if you would take it
out." At last the Crane agreed to try, and told the Wolf to lie
on his side and open his jaws as wide as he could. Then the Crane
put its long neck down the Wolf's throat, and with its beak
loosened the bone, till at last it got it out.

"Will you kindly give me the reward you promised?" said the
Crane.

The Wolf grinned and showed his teeth and said: "Be content.
You have put your head inside a Wolf's mouth and taken it out
again in safety; that ought to be reward enough for you."

Gratitude and greed go not together.