Our danger lies not in falsehoods from the outside, but in evil and impure actions and indifference from the inside. These are the things which we need to fear.
There are at least three dangers that threaten the Church within, and the authorities need to awake to the fact that the people should be warned unceasingly against them. As I see these, they are the flattery of prominent men in the world, false educational ideas, and sexual impurity. ("Three Threatening Dangers." Improvement Era 17:5, March 1914, pp. 476-477)
Knowledge of truth, combined with proper regard for it, and its faithful observance, constitutes true education. The mere stuffing of the mind with a knowledge of facts is not education. The mind must not only possess a knowledge of truth, but the soul must revere it, cherish it, love it as a priceless gem; and this human life must be guided and shaped by it in order to fulfill its destiny. The mind should not only be charged with intelligence, but the soul should be filled with admiration and desire for pure intelligence which comes of a knowledge of the truth. The truth can only make him free who hath it, and will continue in it. And the word of God is truth, and it will endure forever. (Gospel Doctrine: Selections from the Sermons and Writings of Joseph F. Smith, p. 269)
Everyone should learn something new everyday. You all have inquiring minds and are seeking truth in many fields. I sincerely hope your greatest search is in the realm of spiritual things, because it is there that we are able to gain salvation and make the progress that leads to eternal life in our Father's kingdom. The most important knowledge in the world is gospel knowledge. It is knowledge of God and his law, of those things that men must do to work out their salvation with fear and trembling before the Lord. (Ensign, May 1971, pp. 2-3)