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.