Ants were once men and made their living by tilling the soil. But, not content with the results of their own work, they were always casting longing eyes upon the crops and fruits of their neighbours, which they stole, whenever they got the chance, and added to their own store. At last their covetousness made Jupiter so angry that he changed them into Ants. But, though their forms were changed, their nature remained the same: and so, to this day, they go about among the cornfields and gather the fruits of others' labour, and store them up for their own use.
You may punish a thief, but his bent remains.
THE FROGS AND THE WELL
Two Frogs lived together in a marsh. But one hot summer the marsh dried up, and they left it to look for another place to live in: for frogs like damp places if they can get them. By and by they came to a deep well, and one of them looked down into it, and said to the other, "This looks a nice cool place: let us jump in and settle here." But the other, who had a wiser head on his shoulders, replied, "Not so fast, my friend: supposing this well dried up like the marsh, how should we get out again?"
Think twice before you act.