Jewish Wisdom .... 

 There was once a wise Jewish man . He said that the essence of all wisdom is what you have in your head ! His name was Solomon .

 Then came another wise Jewish man . He said that the essence of all is what you have in your heart !! His name was Jesus .

 Then came a third wise Jewish man . He said that the essence of all is what you have in your stomach !!! His name was Marx .

 After him , came a fourth wise Jewish man. He said that the essence of all is what you have between your legs !!!! His name was Freud .

 Then came another wise Jewish man - wiser than all before - called Einstein He said everything is relative !!!!!