Seeking best practices, be it in managing organizations, in implementing development policies or in promoting democratic systems, inevitably meets divergent reactions from the people concerned, according to the part of the world they belong to. Adapting to cultural background appears to be a necessity and understanding the nature of such a resistance to practice standardization is essential in order to conceive and implement the adaptation process. What is at stake does not only have to do with the culture prevailing in a particular village, company or social group, but with the culture of a whole society, a nation. Such cultures, China’s, India’s, African societies’, European countries’ or other parts of the world’s culture, appear to be at the same time endowed with features that stand the test of time, and compatible with a great variety of practices and with an evolution of these practices in time. In order to grasp what characterizes these cultures, one had to renew one’s idea of national cultures and of their relations with languages.