The UNESCO World Philosophy Day of 2008 was declared as the International year of Language with an attractive theme: Languages matter! This monograph gives a critical and constructive appraisal to the role of languages in the disseminations, especially of cultural and inter-cultural values for the mutual benefits of humanity. Of all, the reader may find the chapter on the African voice or contributions to the world as far as values are concerned very enriching and thought-provoking.