Original: Tibor Sekelj ( in Hungarian : Székely Tibor ) ( 14 February 1912 -- 23 September 1988 ) was an explorer , esperantist , writer and lawyer of Jewish descent .
Simplified: His main book on other cultures is Tirez the arrow : oral poetry of the world , Rotterdam : UEA , 1983 , 187 pages , ISBN 92-9017-025-5 .