=10.= Subtler, mightier, and more mysterious still than any or all of the physical forces of nature, are the powers that operate upon conscious organisms, the means by which the mind, the heart, the soul of man may be affected. In our ignorance of the true nature of electric energy, we speak of it as a fluid; and so by analogy the forces through which the mind is governed have been called spiritual fluids. The true nature of these higher powers is unknown to us, for the conditions of comparison and analogy, so necessary to our frail human reasoning, are wanting; still the effects are experienced by all. As the conducting medium in an electric current is capable of conveying but a limited current, the maximum strength depending upon the resistance offered by the conductor, and, as separate circuits of different degrees of conductivity may carry currents of widely varying intensity, so human souls are of varied capacity with respect to the diviner powers. But as the medium is purified, as the obstructions are removed, so the resistance to the energy decreases, and the forces manifest themselves with greater perfection. By analogous processes of purification, may our spirits be made more susceptible to the power of life, which is an emanation from the Spirit of God. Therefore are we taught to pray by word and action for a constantly increasing portion of the Spirit, that is, the power of the Spirit, which is a measure of the favor of God unto us. =11. The Office of the Holy Ghost= in His ministrations among men is very fully described in scripture. He is a Teacher sent from the Father;[481] and unto those who are entitled to His tuition He will reveal all things necessary for the soul's advancement. Through the influences of the Holy Spirit, the powers of the human mind may be quickened and increased, so that things past may be brought to remembrance. He will serve as a guide in things divine unto all who will obey Him,[482] enlightening every man,[483] in proportion to his humility and obedience;[484] unfolding the mysteries of God,[485] as the knowledge thus revealed may tend to spiritual growth; conveying knowledge from God to man;[486] sanctifying those who have been cleansed through obedience to the requirements of the gospel;[487] manifesting all things;[488] and bearing witness unto men concerning the existence and infallibility of the Father and the Son.[489] [481] John xiv, 26. [482] Doc. and Cov. xlv, 57. [483] Doc. and Cov. lxxxiv, 45-47. [484] Doc. and Cov. cxxxvi, 33. [485] I Nephi x, 19. [486] Doc. and Cov. cxxi, 43. [487] Alma xiii, 12. [488] Doc. and Cov. xviii, 18. [489] John xv, 26; Acts v, 32; xx, 23; I Cor. ii, 11; xii, 3; III Nephi xi, 32.