Scientific data are not taken for museum purposes; they are taken as a basis for doing something. If nothing is to be done with the data, then there is no use in collecting any. The ultimate purpose of taking data is to provide a basis for action or a recommendation for action. The step intermediate between the collection of data and the action is prediction.

Nobody should try to use data unless he has collected data.

We want best efforts guided by theory.

The aim should be to work on the method of management.

It is important that an aim never be defined in terms of activity or methods. It must always relate directly to how life is better for everyone. . . . The aim of the system must be clear to everyone in the system. The aim must include plans for the future. The aim is a value judgment.

We should be guided by theory, not by numbers.

It's not enough to do your best; you must know what to do & then do your best.