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 world was."[A] [Footnote A: Doctrine and Covenants, 121:30-32.] Those who may be inclined to believe that this doctrine was taught in a spiritual sense only, should recall that Joseph Smith taught also that spirit is only a pure form of matter,[A] so that the principles of the material world must have their counterparts in the spiritual world. Besides, in the last quotation reference is made to such material bodies as sun, moon, and stars. In other places, special mention is made of the fact that the material universe is controlled by law. For instance: [Footnote A: Doctrine and Covenants, 131:7.] "All kingdoms have a law given: and there are many kingdoms; * * * * and unto every kingdom is given a law; and unto every law there are certain bounds also and conditions. * * * * And again, verily I say unto you, he hath given a law unto all things by which they move in their times and their seasons; and their courses are fixed; even the courses of the heavens and the earth, which comprehend the earth and all the planets."[A] [Footnote A: Doctrine and Covenants, 88:36-33, 42, 43.]