A general theory of social development.
attaching pre-eminent importance to certain aspects of human life, and in subordinating systematically and always, all other considerations to these cardinal aspects. It begins with a way of looking at life. It insists upon that way, it will regard no human concern at all except in that way. And the way, putting the thing as compactly as possible, is to reject and set aside all abstract, refined, and intellectualized ideas as starting propositions, such ideas as Right, Liberty, Happiness, Duty or Beauty, and to hold fast to the assertion of the fundamental nature of life as a tissue and succession of births. These other things may be important, they may be profoundly important, but they are not primary. We cannot build upon any one of them and get a structure that will comprehend all the aspects of life.
For the great majority of mankind at least it can be held that life resolves itself quite simply and obviously into three cardinal phases. There is a period of youth and preparation, a great insurgence of