“This will be accomplished only by a slow but never-failing process of changing men's mental and spiritual attitude. The ways and habits of the world depend upon the thoughts and soul-convictions of men and women. If, therefore, we would change the world, we must first change people's thoughts. Only to the extent that men desire peace and brotherhood can the world be made better. No peace even though temporarily obtained, will be permanent, whether to individuals or nations, unless it is built upon the solid foundation of eternal principles.”

LDS General Conference (October 1964)
Context: The rising sun can dispel the darkness of night, but it cannot banish the blackness of malice, hatred, bigotry, and selfishness from the hearts of humanity. Happiness and peace will come to earth only as the light of love and human compassion enter the souls of men.
It was for this purpose that Christ, the Son of righteousness, 'with healing in his wings,' came in the Meridian of Time. Through him wickedness shall be overcome, hatred, enmity, strife, poverty, and war abolished. This will be accomplished only by a slow but never-failing process of changing men's mental and spiritual attitude. The ways and habits of the world depend upon the thoughts and soul-convictions of men and women. If, therefore, we would change the world, we must first change people's thoughts. Only to the extent that men desire peace and brotherhood can the world be made better. No peace even though temporarily obtained, will be permanent, whether to individuals or nations, unless it is built upon the solid foundation of eternal principles.