Sirr Tatawwur al-'Umamسر تطور الأمم

Translated to Arabic, «Lois Psychologiques de L'Évolution Des Peuples» released in 1894 (Psychological Laws of the Evolution of Nations) by Charles-Marie Gustave Le Bon (1841 - 1931), a leading French polymath whose areas of interest included anthropology, psychology, sociology, medicine, invention, and physics.

This work explains how and why nations are born, nations die, and peoples become great. It shows the psychological morals that make up the soul of every people, and proves that the nation and its civilization are derived from its morals. Gustave Le Bon was perhaps one of the most famous philosophers of the West and one of those who did justice to the Arab nation and Islamic civilization.