Experimentalism

“ In one of his later experimental researches he wrote:—
As an experimentalist, I feel bound to let experiment guide me into any train of thought which it may justify; being satisfied that experiment, like analysis, must lead to strict truth if rightly interpreted; and believing also that it is in its nature far more suggestive of new trains of thought and new conditions of natural power. ”

“ There are only two modes in which laws of nature can be ascertained--deductively and experimentally; including under the denomination of experimental inquiry, observation as well as artificial experiment. Are the laws of the formation of character susceptible of a satisfactory investigation by the method of experimentation? ”

“ Experiment after experiment gave the same result, and I knew, and shrank even as the thought passed through my mind, that in the work I had to do there must be elements which no laboratory could furnish, which no scales could ever measure. ”

“ The vocation of the true experimentalist is the incessant correction and realization of his insight; his experiments finally constituting a body, of which his purified intuitions are, as it were, the soul. ”

“ The greatest triumph of the scientific revolution was, arguably, the advent of the kind of experimental method that still underlies most science today: the fundamental insight that we could get a better handle on the natural world by manipulating it through experiment was, to a large degree, the most important conceptual leap of the era. ”

“ We see then that there are two excellent reasons for conceiving the notion of experiment so broadly. In the first place it becomes possible thereby to comprehend under one head the infinite complications and gradations which are possible in the consciousness of the experimenter, from the most random restlessness and the most blindly instinctive adaptations, to the most clearly conscious testing of an elaborate theory; in the second, it serves to bring out the radically tentative tendency which runs through the whole cosmos. ”

“ The circumstances of the experiment are so arranged that the phenomenon which we wish to observe or to exhibit is brought into prominence, instead of being obscured and entangled among other phenomena, as it is when it occurs in the ordinary course of nature. To exhibit illustrative experiments, to encourage others to make them, and to cultivate in every way the ideas on which they throw light, forms an important part of our duty. ”

“ It must next be admitted that when it is said that the world is constructed by experiment, the conception of experiment is taken very widely and in a way that extends far beyond the conscious experiment of the scientist who is fully aware of what he does and what he wants, and precisely controls all the conditions. ”

“ Such a logic will not fear the challenge of science, for it is precisely this continuity that makes possible experimentation, which is the fundamental characteristic of scientific procedure. Science without experiment is indeed a strange apparition. ”

“ We bring the matter to the test of actual experiment. We make certain experiments, seriatim, upon each of the items that lie within the sentient sphere, and we note the effect which each experiment has upon that portion of the contents which is not meddled with. ”

“ To carry it into effect, there needs only an immediate appeal on a sufficiently large scale, to experiment; reason has done her part, when experiment does hers, nature will not refuse to sanction the whole. ”

“ A reaction had set in, led by Galileo, Gilbert, and the whole modern school of experimental philosophers, lasting down to the present day:—men who teach that the only right way of investigating Nature is by experiment and observation. ”

“ The discoveries which change the method of a science from experimental to deductive, mostly consist in establishing, either by deduction or by direct experiment, that the varieties of a particular phenomenon uniformly accompany the varieties of some other phenomenon better known. ”

“ Now in the matter of experiment for the proof of the thesis that changes in the habits of an animal cause the changes observed in their hair, it is at once seen that, ex hypothesi, no one can impose and work with such calculated conditions as are ordained by experiment, strictly so-called. ”

“ It is by observation also that we discover that stones and other heavy bodies fall to the ground, and that a magnet will attract iron. In other words, experimental philosophy is an investigation of the wisdom of God in the works and the laws of nature, so that it is one of the greatest objects to the mind of man, and opens a field of inquiry which has no bounds; every advance we make suggesting new doubts and subjects of farther inquiry. ”

“ In observation we watch for causes; in experiment we work for effects. We may thus define experiment as the act of making phenomena occur for the purpose of watching for effects. In experiment there is much which is merely observation. In fact experiment is observation in which the phenomenon is artificially produced. For the sake of definiteness, however, any observation which involves a manipulation of circumstances, may be designated as experimental. ”

“ Experiments must be the foundation of theory. With them the beginner should learn to observe, reflect, and judge; from them he should himself unfold the general chemical relations and truths; he should himself discover, and in this way by his own efforts, along with manual dexterity, acquire an intellectual possession also. Every experiment and every fact observed therein will thus be to him a conquest, and will incite to new exertion. ”

“ When we have thus brought together the requisites, both material and intellectual, for a particular experiment, it may sometimes be desirable that before the instruments are dismounted and the observers dispersed, we should make some other experiment, requiring the same method, but dealing perhaps with an entirely different class of physical phenomena. ”

“ We must trust to nothing but facts: These are presented to us by Nature, and cannot deceive. We ought, in every instance, to submit our reasoning to the test of experiment, and never to search for truth but by the natural road of experiment and observation. ”

“ And, although in the study of political economy we can not use that potent method of experiment by artificially produced conditions which is so valuable in the physical sciences, yet, not only may we find, in the diversity of human society, experiments already worked out for us, but there is at our command a method analogous to that of the chemist, in what may be called mental experiment. ”

“ Great deficiencies remain to be supplied, and many vaguely-known points to be cleared up, nor has an effort even been made as yet to systematize all the groups of results gained. The latter task we propose to attempt here, with the purpose of showing by a remarkable instance the manner of evolving knowledge through the power of the experimental method, the sequent, cumulative, and mutually-supporting character of well-conducted experiments, and their endless wealth of instruction; in a word, the process adopted by eminent men in the great art of wresting her secrets from living Nature. ”

“ The practical procedure and practical assumptions of modern experimental science, since they make thinking essentially and not merely accidentally a process of discovery, seem irreconcilable with both the empirical and transcendental interpretations. ”

“ But the best demonstration by far is experience, if it go not beyond the actual experiment. ”

“ It is an acknowledged truth in philosophy, that a just theory will always be confirmed by experiment. ”

“ As the true method of Knowledge is Experiment, the true faculty of knowing must be the faculty which experiences. ”

“ Nature holds no brief for the human experiment: it must stand or fall by its results. ”

“ We must therefore glean up our experiments in this science from a cautious observation of human life, and take them as they appear in the common course of the world, by men's behaviour in company, in affairs, and in their pleasures. Where experiments of this kind are judiciously collected and compared, we may hope to establish on them a science which will not be inferior in certainty, and will be much superior in utility to any other of human comprehension. ”

“ We will, moreover, show those who, in love with contemplation, regard our frequent mention of experiments as something harsh, unworthy, and mechanical, how they oppose the attainment of their own wishes, since abstract contemplation, and the construction and invention of experiments, rest upon the same principles, and are brought to perfection in a similar manner. ”

“ The first experiment strongly illustrates a truth of the theory, well confirmed by practice: whatever can happen will happen if we make trials enough. ”

“ The Rôle of Experiment and Generalisation.—Experiment is the sole source of truth. It alone can teach us something new; ”

“ It is always our endeavour, after making experiments, to generalise the conclusions we draw from them, and by this means to form a theory, or system of principles, to which all the facts may be reduced, and by means of which we may be able 219 to foretell the results of future experiments.... In my former publications I have frequently promised to give such a general theory of the experiments in which the different kinds of air are concerned, as the present state of our knowledge of them will enable me to do. ”

“ Those who have handled sciences have been either men of experiment or men of dogmas. The men of experiment are [p. 93] like the ant; they only collect and use: the reasoners resemble spiders, who make cobwebs out of their own substance. But the bee takes a middle course; it gathers its material from the flowers of the garden and of the field, but transforms and digests it by a power of its own. Not unlike this is the true business of philosophy; ”

“ Every cold empirick, when his heart is expanded by a successful experiment, swells into a theorist, and the laborious collator some unlucky moment frolicks in conjecture. ”

“ The aim of an experiment of illustration is to throw light upon some scientific idea so that the student may be enabled to grasp it. ”

“ We give the name scientist to the type of man who has felt experiment to be a means guiding him to search out the deep truth of life, to lift a veil from its fascinating secrets, and who, in this pursuit, has felt arising within him a love for the mysteries of nature, so passionate as to annihilate the thought of himself. ”

“ It is true that an experiment, in which the principal aim is to see what happens under certain conditions, may be regarded as an experiment of research by those who are not yet familiar with the result, but in experimental researches, strictly so called, the ultimate object is to measure something which we have already seen—to obtain a numerical estimate of some magnitude. ”

“ By scientific thought we mean the application of past experience to new circumstances, by means of an observed order of events. By saying that this order of events is exact, we mean that it is exact enough to correct experiments by, but we do not mean that it is theoretically or absolutely exact, because we do not know. The process of inference we found to be in itself an assumption of uniformity, and that, as the known exactness of the uniformity became greater, the stringency of the inference increased. ”

“ It is known to all persons who are conversant in experimental philosophy, that there are many little attentions and precautions necessary to be observed in the conducting of experiments, which cannot well be described in words, but which it is needless to describe, since practice will necessarily suggest them; though, like all other arts in which the hands and fingers are made use of, it is only much practice that can enable a person to go through complex experiments, of this or any other kind, with ease and readiness. ”

“ My first undertaking in the way of scientific experiment was in the field of economics and psychology. ”

“ We may lay down as an incontesible axiom, that, in all the operations of art and nature, nothing is created; an equal quantity of matter exists both before and after the experiment; the quality and quantity of the elements remain precisely the s; and nothing takes place beyond the changes and modifications in the combination of these elements. Upon this principle the whole art of performing chemical experiments experiments depends: We must always suppose an exact quantity between the elements of the body examined and those products of its analysis. ”

“ While mathematics, and the mathematical sciences, supply us with a typical example of the ascertainment of truth by reasoning; those physical sciences which are not mathematical, such as chemistry, and purely experimental physics, shew us in equal perfection the other mode of arriving at certain truth, by observation, in its most accurate form, that of experiment. ”

“ I adopt Mr. Darwin's hypothesis, therefore, subject to the production of proof that physiological species may be produced by selective breeding; just as a physical philosopher may accept the undulatory theory of light, subject to the proof of the existence of the hypothetical ether; or as the chemist adopts the atomic theory, subject to the proof of the existence of atoms; and for exactly the same reasons, namely, that it has an immense amount of primâ facie probability; that it is the only means at present within reach of reducing the chaos of observed facts to order; ”