"Every social system is a functioning entity. That is, it is a system of interdependent structures and processes such that it tends to maintain a relative stability and distinctiveness of pattern and behaviour as an entity by contrast with its - social or other - environment, and with it a relative independence from environmental forces. It "responds", to be sure, to the environmental stimuli, but is not completely assimilated to its environment, maintaining rather an element of distinctiveness in the face of variations in environmental conditions. To this extent it is analogous to an organism"

“As a formal analytical point of reference, primacy of orientation to the attainment of a specific goal is used as the defining characteristic of an organization which distinguishes it from other types of social systems.”

“The structure of a theoretical system tells us what alternatives are open in the possible answers to a given question. If observed facts of undoubted accuracy will not fit any of the alternatives it leaves open, the system itself is in need of reconstruction.”

“Ideology is a system of beliefs, held in common by the members of a collectivity.”

“Without deliberate planning on anyone's part, there have developed in our type of social system, and correspondingly in others, mechanisms which, within limits, are capable of forestalling and reversing the deep-lying tendencies for deviance to get into the vicious circle phase which puts it beyond the control of ordinary approval-disapproval and reward-punishment sanctions.”

“suggest that we think of theories as spotlight. this imagery is useful. a spotlight will only illuminate so much. wiht any theory there will always be the things that are left in darkness, still unexamined and unexplained. parsons referred to these as'residual categories'.”

“A social system is a mode of organization of action elements relative to the persistence or ordered processes of change of the interactive patterns of a plurality of individual actors.”