“Apostasy usually begins with question and doubt and criticism…They who garnish the sepulchres of the dead prophets begin now by stoning the living ones. They return to the pronouncements of the dead leaders and interpret them to be incompatible with present programs. They convince themselves that there are discrepancies between the practices of the deceased and the leaders of the present. … They allege love for the gospel and the Church but charge that leaders are a little ‘off the beam’! … Next they say that while the gospel and the Church are divine, the leaders are fallen. Up to this time it may be a passive thing, but now it becomes an active resistance, and frequently the blooming apostate begins to air his views and to crusade. … He now begins to expect persecution and adopts a martyr complex, and when finally excommunication comes he associates himself with other apostates to develop and strengthen cults. At this stage he is likely to claim revelation for himself, revelations from the Lord directing him in his interpretations and his actions. These manifestations are superior to anything from living leaders, he claims” (The Teachings of Spencer W. Kimball (Salt Lake City: Bookcraft, 1982), p. 462).“I will give you one of the Keys of the mysteries of the Kingdom. It is an eternal principle, that has existed with God from all eternity. That man who rises up to condemn others, finding fault with the Church, saying that they are out of the way, while he himself is righteous, then know assuredly, that that man is on the high road to apostasy; and if he does not repent, will apostatize, as God lives.” (Teachings of the Prophet Joseph Smith, pp. 156-57.)
"Youth who start out to indulge their appetites and passions are on the downward road to apostasy as sure as the sun rises in the east. I do not confine it to youth; any man or woman who starts out on that road of intemperance, of dissolute living will separate himself or herself from the fold as inevitably as darkness follows the day" (President David O. Mckay, CR, April 1945, p.123).