“ The need in our police forces of brains and high morale; the need of cultivating the professional spirit in them, that shall dignify the work, shall banish political influence and all other influences that go to break the heart of the policeman who tries to do his plain duty; the need of having the public take an intelligent interest in police methods and results, doing away with the smoke-screens of mystery and concealment which are traditionally employed to cover dishonesty and incompetency. ”

“ Former Police Commissioner Authur Woods contributes an introduction in which after commending the good work done by Inspector Tunney and his men, he says:
The lessons to America are clear as day. We must not again be caught napping with no adequate national intelligence organisation. The several Federal bureaus should be welded into one, and that one should be eternally and comprehensively vigilant. We must be wary of strange doctrine, steady in judgment, instinctively repelling those who seek to poison public opinion. ”

“ And our laws should be amended so that, while they give free scope to Americans for untrammeled expression of differences of opinion and theory and belief, they forbid and prevent the enemy plotter and propagandist. ”