"In a class system, the social hierarchy is based primarily upon differences in monetary wealth and income. Social classes are not sharply marked off from each other, nor are they demarcated by tangible boundaries. Unlike estates, they have no legal standing, individuals of all classes being in principle equal before the law. Consequently, there are no legal restraints on the movement of individuals and families from one class to another... Unlike caste, social classes are not organized, closed groups. Rather, they are aggregates of persons with similar amounts of wealth and property, and similar sources of income."

“In modern science, in fact, let alone modern systems theory, cause disappears wherever you have a very complex system of interrelated elements.”

“A second dimension of stratification in modern societies is the status order. The term status as used in this study refers to the differentiation-of-prestige and deference among individuals and groups in society.”

“As a suggested working definition, we may define power as control or influence over the actions of others to promote one's goals without their consent, against their "will," or without their knowledge or understanding.”

“A more viable model, one much more faithful to the kind of system that society is more and more recognized to be, is in process of developing out of, or is in keeping with, the modern systems perspective . Society, or the sociocultural system, is not, then, principally an equilibrium system or a homeostatic system, but what we shall simply refer to as a complex adaptive system.”

“The notion of system we are interested in may be described generally as a complex of elements or components directly or indirectly related in a network of interrelationships of various kinds, such that it constitutes a dynamic whole with emergent properties.”

“This book is intended as an exploratory sketch of a revolutionary scientific perspective and conceptual framework as it might be applied to sociocultural systems. This point of view and still developing framework, as interpreted here, stems from the General Systems Research movement and the now closely allied fields of Cybernetics and information or communication theory.”