A Sheikh’s son goes to Germany for study.

A month later, he sends a letter to his dad saying:

‘ Berlin is wonderful, people are nice and I really like it here, but I’m a bit ashamed to arrive to school with my gold Mercedes when all my teachers travel by train.’

Sometime later he gets a letter from his dad with a ten million dollar cheque saying:

‘Stop embarrassing us, go and get yourself a train too..’