One must start with a hypothesis, no matter how much one distrusts it; so I started with man as a mechanism, this being the strand of the knot that I could then pick at most easily. Having worked upon it a certain time, I drew the inference about machines becoming animate, and in 1862 or 1863 wrote the sketch of the chapter on machines which I afterwards rewrote in “Erewhon.” This sketch appeared in the Press, Canterbury, N.Z., June 13, 1863; a copy of it is in the British Museum.

I soon felt that though there was plenty of amusement to be got out of this line, it was one that I should have to leave sooner or later; I therefore left it at once for the view that machines were limbs which we had made, and carried outside our bodies instead of incorporating them with ourselves. A few days or weeks later than June 13, 1863, I published a second letter in the Press putting this view forward. Of this letter I have lost the only copy I had; I have not seen it for years. The first was certainly not good; the second, if I remember rightly, was a good deal worse, though I believed more in the views it put forward than in those of the first letter. I had lost my copy before I wrote “Erewhon,” and therefore only gave a couple of pages to it in that book; besides, there was more amusement in the other view. I should perhaps say there was an intermediate extension of the first letter which appeared in the Reasoner, July 1, 1865.

In 1870 and 1871, when I was writing “Erewhon,” I thought the best way of looking at machines was to see them as limbs which we had made and carried about with us or left at home at pleasure. I was not, however, satisfied, and should have gone on with the subject at once if I had not been anxious to write “The Fair Haven,” a book which is a development of a pamphlet I wrote in New Zealand and published in London in 1865.

As soon as I had finished this, I returned to the old subject, on which I had already been engaged for nearly a dozen years as continuously as other business would allow, and proposed to myself to see not only machines as limbs, but also limbs as machines. I felt immediately that I was upon firmer ground. The use of the word “organ” for a limb told its own story; the word could not have become so current under this meaning unless the idea of a limb as a tool or machine had been agreeable to common sense. What would follow, then, if we regarded our limbs and organs as things that we had ourselves manufactured for our convenience?

The first question that suggested itself was, how did we come to make them without knowing anything about it? And this raised another, namely, how comes anybody to do anything unconsciously? The answer “habit” was not far to seek. But can a person be said to do a thing by force of habit or routine when it is his ancestors, and not he, that has done it hitherto? Not unless he and his ancestors are one and the same person. Perhaps, then, they are the same person after all. What is sameness? I remembered Bishop Butler’s sermon on “Personal Identity,” read it again, and saw very plainly that if a man of eighty may consider himself identical with the baby from whom he has developed, so that he may say, “I am the person who at six months old did this or that,” then the baby may just as fairly claim identity with its father and mother, and say to its parents on being born, “I was you only a few months ago.” By parity of reasoning each living form now on the earth must be able to claim identity with each generation of its ancestors up to the primordial cell inclusive.

Again, if the octogenarian may claim personal identity with the infant, the infant may certainly do so with the impregnate ovum from which it has developed. If so, the octogenarian will prove to have been a fish once in this his present life. This is as certain as that he was living yesterday, and stands on exactly the same foundation.

I am aware that Professor Huxley maintains otherwise. He writes: “It is not true, for example, . . . that a reptile was ever a fish, but it is true that the reptile embryo” (and what is said here of the reptile holds good also for the human embryo), “at one stage of its development, is an organism, which, if it had an independent existence, must be classified among fishes.” [17]

This is like saying, “It is not true that such and such a picture was rejected for the Academy, but it is true that it was submitted to the President and Council of the Royal Academy, with a view to acceptance at their next forthcoming annual exhibition, and that the President and Council regretted they were unable through want of space, &c., &c.”—and as much more as the reader chooses. I shall venture, therefore, to stick to it that the octogenarian was once a fish, or if Professor Huxley prefers it, “an organism which must be classified among fishes.”

But if a man was a fish once, he may have been a fish a million times over, for aught he knows; for he must admit that his conscious recollection is at fault, and has nothing whatever to do with the matter, which must be decided, not, as it were, upon his own evidence as to what deeds he may or may not recollect having executed, but by the production of his signatures in court, with satisfactory proof that he has delivered each document as his act and deed.

This made things very much simpler. The processes of embryonic development, and instinctive actions, might be now seen as repetitions of the same kind of action by the same individual in successive generations. It was natural, therefore, that they should come in the course of time to be done unconsciously, and a consideration of the most obvious facts of memory removed all further doubt that habit—which is based on memory—was at the bottom of all the phenomena of heredity.