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Updated: June 17, 2025
But most school children, if they are to learn the facts on which the conception of intellectual conduct depends, must learn them even more directly. I myself believe that a very simple course on the well-ascertained facts of psychology would, if patiently taught, be quite intelligible to any children of thirteen or fourteen who had received some small preliminary training in scientific method.
In the first place, as regards structural characteristics, I endeavoured to show you, by the skeletons which I had upon the table, and by reference to a great many well-ascertained facts, that the different breeds of Pigeons, the Carriers, Pouters, and Tumblers, might vary in any of their internal and important structural characters to a very great degree; not only might there be changes in the proportions of the skull, and the characters of the feet and beaks, and so on; but that there might be an absolute difference in the number of the vertebrae of the back, as in the sacral vertebrae of the Pouter; and so great is the extent of the variation in these and similar characters that I pointed out to you, by reference to the skeletons and the diagrams, that these extreme varieties may absolutely differ more from one another in their structural characters than do what naturalists call distinct SPECIES of pigeons; that is to say, that they differ so much in structure that there is a greater difference between the Pouter and the Tumbler than there is between such wild and distinct forms as the Rock Pigeon or the Ring Pigeon, or the Ring Pigeon and the Stock Dove; and indeed the differences are of greater value than this, for the structural differences between these domesticated pigeons are such as would be admitted by a naturalist, supposing he knew nothing at all about their origin, to entitle them to constitute even distinct genera.
It is in this effort to secure proof that modern science has gathered the enormous store of well-ascertained facts which constitutes its true wealth, and which distinguishes it from the earlier imaginative and to a great extent unproved views.
All this comes out of the well-ascertained facts of the law of relation between subjective and objective mind. Then comes the question, Is there no way of getting out of this law? The answer is that we can never get away from universal principles but we can specialise them.
Of course, our knowledge of the life of the invertebrates, save the termites, the ants, and the bees, is extremely limited; and yet, even as regards the lower animals, we may glean a few facts of well-ascertained cooperation.
It is a well-ascertained fact, says Baden-Powell, that of all animals the boar does not fear to drink at the same pool with a tiger; nay, a case is on record of his having taken his drink with a tiger on each side of him.
Such is the well-ascertained history of the hair-worm, excluding entirely the popular belief in its origin. There certainly does exist in science a theory known as that of "spontaneous generation," which, in ancient times, accounted for the production of insects and other animals by assuming that they were produced in some mysterious fashion out of lifeless matter.
Medicine is a science; it deals with undoubted facts and certain principles, and with theories in so far as they are supported by well-ascertained realities. The border-land of which I speak presents to our investigation few certain facts. It is chiefly the domain of imposture. Charlatans and showmen and medical quacks call things facts that are not facts.
And whatever may be the preference occasionally shown by certain breeds to mate with their own variety, no sterility is recorded as resulting from unions with other varieties. Indeed, Mr. Darwin remarks, "With respect to sterility from the crossing of domestic races, I know of no well-ascertained case with animals.
Seven months after his marriage, and on the 22d of August, 1350, Philip died at Nogent-le-Roi in the Haute-Marne, strictly enjoining his son John to maintain with vigor his well-ascertained right to the crown he wore, and leaving his people bowed down beneath a weight "of extortions so heavy that the like had never been seen in the kingdom of France."
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