Y.M. Illustrate it.
O.M. Take a herd of cows, feeding in a pasture. Their heads are all turned in one direction. They do that instinctively; they gain nothing by it, they have no reason for it, they don't know why they do it. It is an inherited habit which was originally thought – that is to say, observation of an exterior fact, and a valuable inference drawn from that observation and confirmed by experience. The original wild ox noticed that with the wind in his favor he could smell his enemy in time to escape; then he inferred that it was worth while to keep his nose to the wind. That is the process which man calls reasoning. Man's thought-machine works just like the other animals', but it is a better one and more Edisonian. Man, in the ox's place, would go further, reason wider: he would face part of the herd the other way and protect both front and rear.
Y.M. Did you stay the term instinct is meaningless?
O.M. I think it is a bastard word. I think it confuses us; for as a rule it applies itself to habits and impulses which had a far-off origin in thought, and now and then breaks the rule and applies itself to habits which can hardly claim a thought-origin.
Y.M. Give an instance.
O.M. Well, in putting on trousers a man always inserts the same old leg first – never the other one. There is no advantage in that, and no sense in it. All men do it, yet no man thought it out and adopted it of set purpose, I imagine. But it is a habit which is transmitted, no doubt, and will continue to be transmitted.
Y.M. Can you prove that the habit exists?
O.M. You can prove it, if you doubt. If you will take a man to a clothing-store and watch him try on a dozen pairs of trousers, you will see.
Y.M. The cow illustration is not—
O.M. Sufficient to show that a dumb animal's mental machine is just the same as a man's and its reasoning processes the same? I will illustrate further. If you should hand Mr. Edison a box which you caused to fly open by some concealed device he would infer a spring, and would hunt for it and find it. Now an uncle of mine had an old horse who used to get into the closed lot where the corn-crib was and dishonestly take the corn. I got the punishment myself, as it was supposed that I had heedlessly failed to insert the wooden pin which kept the gate closed. These persistent punishments fatigued me; they also caused me to infer the existence of a culprit, somewhere; so I hid myself and watched the gate. Presently the horse came and pulled the pin out with his teeth and went in. Nobody taught him that; he had observed – then thought it out for himself. His process did not differ from Edison's; he put this and that together and drew an inference – and the peg, too; but I made him sweat for it.