This body of administrative literature can be taught to young men and women; perhaps also to the aged, if they are not hopeless. And it is possible by tests to discover whether or how far the process of communicating and imparting administrative knowledge has been successful, [although] not precisely in all cases. Moreover, and this is highly important, young men and women who have more or less mastered the principles, maxims, and axioms of administrative science can now, by what is called in-training, fortify their formal knowledge by living experiences in and with administration. There is, then, a science of administration, in the sense in which I have used the term, and it can be taught, learned, and used.