First, in the field of knowledge, there are profound inequalities between rich countries and poor countries. One of the vicious circles of under-development is that it is sustained by the knowledge gap while accentuating it in return. Second, the rise of a global information society has allowed a considerable mass of information or knowledge to be disseminated via the leading media. However, the different social groups are far from having equal access and capacity to assimilate this growing flow of information or knowledge. Not only do the most disadvantaged socio-economic categories have often a limited access to information or to knowledge (digital divide), but also they do not assimilate it as well as those who are on the highest rung of the social ladder. Such a divide can also be witnessed between nations. An imbalance is thus created in the actual relationship to knowledge (knowledge divide). Given equal access to it, those who have a high level of education benefit much more from knowledge than those with no or only limited education. The widespread dissemination of knowledge therefore, far from narrowing the gap between developed and less developed countries, may help to widen it.