If observed facts of undoubted accuracy will not fit any of the alternatives it leaves open, the system itself is in need of reconstruction.

If observed facts of undoubted accuracy will not fit any of the alternatives it leaves open, the system itself is in need of reconstruction.

Theory not only formulates what we know but also tells us what we want to know, that is, the questions to which an answer is needed.

Empirical interest will be in the facts so far as they are relevant to the solution of these problems.

The functions of the family in a highly differentiated society are not to be interpreted as functions directly on behalf of the society, but on behalf of personality.

The part an actor played on stage was once written on a separate roll of paper.

The importance of certain problems concerning the facts will be inherent in the structure of the system.