unknowable, led to many harmful superstitions. Chief among the fallacies of the early ages was the belief that God at will could, and did, cause various phenomena to appear in nature, which were contrary to all human experience. As observed in chapter 4, a class of men arose who claimed to be in possession of knowledge which made them also able, at will, to cause various supernatural manifestations. Thus arose the occult sciences, so called,—alchemy, astrology, magic, witchcraft, and all other similar abominations of the intellect. Such beliefs made the logical study of nature superfluous, for any apparent regularity or law in nature might at any time be overturned by a person in possession of a formula of the black art or a properly treated broomstick.

While such ideas prevailed among the majority of men, the rational study of science could make little progress. In the march of the ages as the ideas of men were classified, it began to be understood that the claims of the devotees of the mystical arts not only could not be substantiated but were in direct opposition to the known operations of nature. It became clear to the truthseekers, that in nature a given cause, acting upon any given object, providing all surrounding conditions be left unchanged, will always produce the same effect. Thus, coal of a certain quality, brought to a high temperature in the presence of air, will burn and produce heat; a stick held in water at the right angle will appear crooked; iron kept in contact with moisture and air, at the right temperature, will be changed into rust; sunlight passed through a glass prism will be broken into rainbow colors; ordinary plants placed in a dark cellar will languish and die. No matter how often trials are made, the above results are obtained; and today it is safe to assert that in the material world no relation of cause and effect, once established, has failed to reappear at the will of the investigator. As this principle of the constancy in the relations between cause and effect was established, the element of chance in natural phenomena, with its attendant arts of magic, had to disappear. It is now well understood by intelligent persons that the law of order controls all the elements of nature.

It is true that the cause of any given effect may, itself, be the effect of other causes, and that the first cause of daily phenomena is not and probably cannot be understood. It is also true that very seldom is the mind able to comprehend why certain causes, save the simpler ones, should produce certain effects. In that respect we are again nothing more than Plato's cave prisoners, seeing the shadows of ultimate realities. However, the recognition of the principle of the invariable relation between cause and effect was a great onward stride in the intellectual development of the world.

[Sidenote: Laws of nature are man's simplest expression of many related facts.]

Now, as men began to investigate nature with her forces, according to the new light, numerous relations of the forces were discovered—in number far beyond the comprehension of the human mind. Then it was found necessary to group all facts of a similar nature, and invent, if possible, some means by which the properties of the whole group might be stated in language so simple as to reach the understanding. Thus came the laws of nature.

For instance, men from earliest times observed the heavenly bodies and the regularity of their motions. Theories of the universe were invented which should harmonize with the known facts. As new facts were discovered, the theories had to be changed and extended. First it was believed that the earth was fixed in mid-space, and sun and stars were daily carried around it. Hipparchus improved this theory by placing the earth not exactly in the center of the sun's circle. Ptolemy, three hundred years later, considered that the sun and moon move in circles, yearly, around the earth, and the other planets in circles, whose centers again described circles round the earth. Copernicus simplified the whole system by teaching that the earth rotated around its axis, and around the sun. Keppler next showed that the earth moved around the sun in certain curves termed ellipses. Finally, Newton hit upon the wide-embracing law of gravitation, which unifies all the known facts of astronomy.[A] All the earlier laws were correct, so far as they included all the knowledge of the age in which they were proposed, but were insufficient to include the new discoveries.

[Footnote A: See The Grammar of Science, Pearson, pp. 117, 118.]

Laws of nature are, therefore, man's simplest and most comprehensive expression of his knowledge of certain groups of natural phenomena. They are man-made, and subject to change as knowledge grows; but, as they change, they approach or should approach more and more nearly to the perfect law. Modern science is built upon the assumption that the relations between cause and effect are invariable, and that these relations may be grouped to form great natural laws, which express the modes by which the forces of the universe manifest themselves.

[Sidenote: A miracle is a law not understood.]

In this matter, science is frankly humble, and acknowledges that the region of the unknown is far greater than that of the known. Forces, relations and laws may exist as yet unknown to the world of science, which, used by a human or superhuman being, might to all appearances change well-established relations of known forces. That would be a miracle; but a miracle simply means a phenomenon not understood, in its cause and effect relations. It must also be admitted that men possess no absolute certainty that though certain forces, brought into a certain conjunction a thousand times, have produced the same effect, they will continue to do so. Should a variation occur, however, that also must be ascribed to an inherent property of the forces or conditions, or the existence of a law not understood.[A] There can be no chance in the operations of nature. This is a universe of law and order.

[Footnote A: The Credentials of Science, the Warrant of Faith, Cooke, pp. 169, 170.]

[Sidenote: Joseph Smith taught the invariable relation of cause and effect.]

Were it not for the sake of the completeness of the argument running through these chapters, it would be unnecessary to call attention to the fact that Joseph Smith in a very high degree held views similar to those taught by science relative to cause and effect, and the reign of law.

From the beginning of his career, the Prophet insisted upon order, or system, as the first law in the religion or system of philosophy which he founded.[A] Moreover, the order which he taught was of an unchangeable nature, corresponding to the invariable relation between cause and effect. He wrote, "There is a law, irrevocably decreed in heaven before the foundations of this world, upon which all blessings are predicated; and when we obtain any blessing from God, it is by obedience to that law upon which it is predicated."[B] No text book in science has a clearer or more positive statement than this, of the fact that like causes have like effects, like actions like results. The eternal nature of natural law is further emphasized as follows:

[Footnote A: Doctrine and Covenants, 28:13; 132; 8.]

[Footnote B: Doctrine and Covenants, 130:20, 21.]

"If there be bounds set to the heavens, or to the seas: or to the dry land, or to the sun, moon or stars; all the times of their revolutions; all the appointed days, months, and years, and all the days of their days, months, and years, and all their glories, laws, and set times, shall be revealed, in the days of the dispensation of the fullness of times, according to that which was ordained in the midst of the Council of the Eternal God of all other Gods before this