مقدمة ابن خلدون

The introduction, is a book written by Ibn khaldoun as introduction
to his huge book: «Kitab Al-'Ibar». This introduction was considered as a separate
book, taking a form of an encyclopaedia, talking about field of knowledge of
legalization, history, geography, economy, social, politic and medicine. This
book also talks about human and their differences and environment and its
impact on man. In addition, it discusses, in study, the development of nations
and people and the appearance of states. In this book, Ibn Khaldoun was the
first thinker who talks about social sciences. We can summarize this
introduction in a group of points of view to consider it the base of social
science.