We do not discuss the anatomical, physiological, and mental characteristics of man considered as an individual; but we are interested in the diversity of these traits in groups of men found in different geographical areas and in different social classes. Franz Boas
There are three social classes in America: upper middle class, middle class, and lower middle class. Judith Martin
Sport must be the heritage of all men and of all social classes. Pierre de Coubertin
A nation is all the individuals of same blood, forming by their cohesion a natural related collective being with it s own organs and state which are social classes and the State and the same soul, which is nationality. A.C. Cuza
Each ‘urban struggle' must have its structural content specified, and be considered in terms of the role it plays vis-à-vis the various social classes involved. Then and only then will we know what we are talking about. Manuel Castells
We are like a woman with a difficult pregnancy. We have to rebuild the social classes in Egypt, and we must change the way things were. Naguib Mahfouz