“Then I think the police would decline to move in the matter, and you might find that you had raised a scandal in Dr. Stillbury’s practice to no purpose.”

“So you think I had better do nothing in the matter?”

“For the present. It is, of course, a medical man’s duty to assist justice in any way that is possible. But a doctor is not a detective; he should not go out of his way to assume police functions. He should keep his eyes and ears open, and, though, in general, he should keep his own counsel, it is his duty to note very carefully anything that seems to him likely to bear on any important legal issues. It is not his business officiously to initiate criminal inquiries, but it is emphatically his business to be ready, if called upon, to assist justice with information that his special knowledge and opportunities have rendered accessible to him. You see the bearing of this?”

“You mean that I should note down what I have seen and heard and say nothing about it until I am asked.”