A theoretical system does not merely state facts which have been observed and that logically deducible relations to other facts which have also been observed.

But the fact a person denies that he is theorising is no reason for taking him at his word and failing to investigate what implicit theory is involved in his statements.

Among those who are satisfactory in this respect it is desirable to have represented as great a diversity of intellectual tradition, social milieu and personal character as possible.

Talcott Parsons Quotes