"That I am insane."

"You are not insane," I answered harshly.

She looked at me as if my words or manner amused her. "I remember now," she said. "I complained of the worry in my head, and then you questioned me."

"It is not an uncommon complaint," I rejoined.

"Is it not?" she answered. "Well, I don't know whether to be sorry for the other sufferers, or relieved to think that I am not the only one, which is what you intend, I believe. But, doctor, the misery is terrible, especially now that it has become almost incessant. It drives me—fills my mind with such dreadful ideas. I have actually meditated murder lately."

"Murder in the abstract, I supposed?"

"No, murder actually, murder for my own benefit, or what I fancy in that mood would be for my benefit; the murder of one poor miserable creature whom I pity with all my heart and really care for—when I am in my right mind."

My heart sank. It was not necessary for me to know, and I had no inclination to ask, who the "one poor miserable creature" was.

"And when the impulse is on you, what do you do?" I said.

"It is not an impulse exactly," she answered; "at least, it is nothing which I have ever had the slightest inclination to act upon. I am just possessed by the idea—whatever it may be—and then I cannot sit still. I have to rush out."