Professor Greenberg, in his series of linguistic studies, writes: ‘From the present series there will emerge a complete genetic reclassification of the languages of Africa. These results are so at variance from the commonly accepted scheme that a brief methodological foreword seems in order.’ This is a clear and frank statement and a great promise. Until now, in spite of several attempts, no satisfactory classification of African languages has existed. Though it may seem natural not to be satisfied with an analysis of individual languages but to aim at a synthesis, to see the whole and its interrelations, there was in many quarters a definite aversion from a holistic approach; it was even said to be more important to stress the differences than to try to find relationships. It is certainly necessary to study each single language in all its peculiarities, but it is wrong to maintain that a comparative investigation should not be undertaken until every African language has been analysed; that would defer the matter ad kalendas graecas . It is not necessary to analyse every Bantu language in order to show the characteristic features of Bantu languages and their relation to other languages. We are grateful to Professor Greenberg for his attempt, which reveals a familiarity with the problem and a sound and extensive knowledge of many African languages. Though not every point he makes is new, yet he indicates new roads and provides food for reflection and discussion.