"What is it?"
"Will you promise me to obey implicitly everything I order you to do?"
"Do you mean—as a doctor?"
"I do."
"I promise."
"Very well. If you carry out that promise, I think I can undertake to cure you. I think I can undertake that some day you will be once more the strong man who rejoices in his strength."
Tears came into Nigel's eyes.
"I wonder," he said. "I wonder."
"But remember," Isaacson said, almost with solemnity, "I shall expect from you implicit obedience to my medical orders. And the first of them is this: you are to swallow nothing which is not given to you by me with my own hand."
"Medicine, you mean?"