Man called his friend, experienced lawyer, to complain about someone who owes him 1000 dollars and did not want to give the money back. His other problem is that he does not have a proof of the transaction.
“Write to him” – advised him the lawyer – ” … to immediately return those 1,500 dollars that he owes you.”
“But he owes me 1,000!”
“Exactly! He will get angry and write to you he took 1000, not 1500 dollars. This letter will now be your proof.”

One night a lawyer got a visit from the Devil who offered him a deal:
“You will win every case you get involved in, you will become the richest man in the world, but all your relatives and friends will die and go to hell. You have time to think until tomorrow.”
And the Devil disappeared. The lawyer sat and pondered:
“A – ha … a – ha … a – ha … I don’t understand – what’s the catch?!”