Joseph Smith on Truth

Receiving truth
“One of the grand fundamental principles of Mormonism is to receive truth, let it come from whence it may.” (Discourses of the Prophet Joseph Smith, p. 199)

The best way to obtain truth and wisdom
“The best way to obtain truth and wisdom is not to ask from books, but to go to God in prayer, and obtain divine teaching.” (History of the Church, 4:425)

Gather all the good and true principles
“We should gather all the good and true principles in the world and treasure them up, or we shall not come out true Mormons.”
(Teachings of the Prophet Joseph Smith, p. 316)

We have a right to embrace all, and every item of truth without limitation
“Mormonism is truth; and every man who embraces it feels himself at liberty to embrace every truth: consequently the shackles of superstition, bigotry, ignorance, and priestcraft, fall at once from his neck; and his eyes are opened to see the truth, and truth greatly prevails over priestcraft… Mormonism is truth, in other words the doctrine of the Latter-day Saints, is truth. … The first and fundamental principle of our holy religion is, that we believe that we have a right to embrace all, and every item of truth, without limitation or without being circumscribed or prohibited by the creeds or superstitious notions of men, or by the dominations of one another, when that truth is clearly demonstrated to our minds, and we have the highest degree of evidence of the same.” (Letter from Joseph Smith to Isaac Galland, Mar. 22, 1839, Liberty Jail, Liberty, Missouri, published in Times and Seasons, Feb. 1840, pp. 53–54; spelling and grammar modernized.)

Ready to believe all true principles that exist
“I stated that the most prominent difference in sentiment between the Latter-day Saints and sectarians was, that the latter were all circumscribed by some peculiar creed, which deprived its members the privilege of believing anything not contained therein, whereas the Latter-day Saints … are ready to believe all true principles that exist, as they are made manifest from time to time.” (History of the Church, 5:215; from “History of the Church” (manuscript), book D-1, p. 1433, Church Archives.)

Limitations on knowledge
“I cannot believe in any of the creeds of the different denominations, because they all have some things in them I cannot subscribe to, though all of them have some truth. I want to come up into the presence of God, and learn all things; but the creeds set up stakes [limits], and say, ‘Hitherto shalt thou come, and no further’ [Job 38:11]; which I cannot subscribe to.” (History of the Church, 6:57; punctuation modernized; from a discourse given by Joseph Smith on Oct. 15, 1843, in Nauvoo, Illinois; reported by Willard Richards.)

Pure intelligence
“A person may profit by noticing the first intimation of the spirit of revelation; for instance, when you feel pure intelligence flowing into you, it may give you sudden strokes of ideas, so that by noticing it, you may find it fulfilled the same day or soon; [that is,] those things that were presented unto your minds by the Spirit of God, will come to pass; and thus by learning the Spirit of God and understanding it, you may grow into the principle of revelation, until you become perfect in Christ Jesus.” (B.H. Roberts, History of the Church 3:381)

Always acknowledge virtuous qualities
“When we see virtuous qualities in men, we should always acknowledge them, let their understanding be what it may in relation to creeds and doctrine; for all men are, or ought to be free. … This doctrine I do most heartily subscribe to and practice” (Teachings of Presidents of the Church: Joseph Smith [2007], 345–46).

Revealed in the abstract
“All things whatsoever God in his infinite wisdom has seen fit and proper to reveal to us, while we are dwelling in mortality, in regard to our mortal bodies, are revealed to us in the abstract, and independent of affinity of this mortal tabernacle, but are revealed to our spirits precisely as though we had no bodies at all.” (Joseph Fielding Smith (editor), Teachings of the Prophet Joseph Smith, p. 355)

The oldest book
“I thank God that I have got this old book [the Bible]; but I thank him more for the gift of the Holy Ghost. I have got the oldest book in the world; but I have got the oldest book in my heart, even the gift of the Holy Ghost. I have all the four Testaments.” (Alma P. Burton, Discourses of the Prophet Joseph Smith, p. 343-344)

Condeming each other
“The [Muslim] condemns the heathen, the Jew,and the Christian, and the whole world of mankind that reject his Koran, as infidels, and consigns the whole of them to perdition. The Jew believes that the whole world that rejects his faith and are not circumcised, are Gentile dogs, and will be damned. The heathen is equally as tenacious about his principles, and the Christian consigns all to perdition who cannot bow to his creed, and submit to his ipse dixit. But while one portion of the human race is judging and condemning the other without mercy, the Great Parent of the universe looks upon the whole of the human family with a fatherly care and paternal regard; He views them as His offspring, and without any of those contracted feelings that influence the children of men, causes “His sun to rise on the evil and on the good, and sendeth rain on the just and on the unjust.” (Times and Seasons, 15 April 1842, 758)

Related: Brigham Young on Truth