Science historians argue that the traces of Khaldun's theories were found in the works of world-famous intellectuals like Karl Marx, Adam Smith and David Ricardo. Ibn Khaldun was born May 27 1332 in Tunis, the capital city of present-day Tunisia. Raised and educated in a family of scholars and politicians, Khaldun came across as a gifted thinker right from his young age. Although his first job as a calligrapher in ...