He said that was so, and proceeded to point out that the possibility of vivisection does not stop at a mere physical metamorphosis. A pig may be educated. The mental structure is even less determinate than the bodily. In our growing science of hypnotism we find the promise of a possibility of superseding old inherent instincts by new suggestions, grafting upon or replacing the inherited fixed ideas. Very much indeed of what we call moral education, he said, is such an artificial modification and perversion of instinct; pugnacity is trained into courageous self-sacrifice, and suppressed sexuality into religious emotion. And the great difference between man and monkey is in the larynx, he continued,--in the incapacity to frame delicately different sound-symbols by which thought could be sustained. In this I failed to agree with him, but with a certain incivility he declined to notice my objection. He repeated that the thing was so, and continued his account of his work.

I asked him why he had taken the human form as a model. There seemed to me then, and there still seems to me now, a strange wickedness for that choice.

He confessed that he had chosen that form by chance. "I might just as well have worked to form sheep into llamas and llamas into sheep. I suppose there is something in the human form that appeals to the artistic turn of mind more powerfully than any animal shape can. But I've not confined myself to man-making. Once or twice--" He was silent, for a minute perhaps. "These years! How they have slipped by! And here I have wasted a day saving your life, and am now wasting an hour explaining myself!"

"But," said I, "I still do not understand. Where is your justification for inflicting all this pain? The only thing that could excuse vivisection to me would be some application--"

"Precisely," said he. "But, you see, I am differently constituted. We are on different platforms. You are a materialist."

"I am _not_ a materialist," I began hotly.

"In my view--in my view. For it is just this question of pain that parts us. So long as visible or audible pain turns you sick; so long as your own pains drive you; so long as pain underlies your propositions about sin,--so long, I tell you, you are an animal, thinking a little less obscurely what an animal feels. This pain--"

I gave an impatient shrug at such sophistry.

"Oh, but it is such a little thing! A mind truly opened to what science has to teach must see that it is a little thing. It may be that save in this little planet, this speck of cosmic dust, invisible long before the nearest star could be attained--it may be, I say, that nowhere else does this thing called pain occur. But the laws we feel our way towards--Why, even on this earth, even among living things, what pain is

As he spoke he drew a little penknife from his pocket, opened the smaller blade, and moved his chair so that I could see his thigh. Then, choosing the place deliberately, he drove the blade into his leg and withdrew it.