The first deviation toward moral breakdown in a man or woman is similar to a spark that ignites a devastating forest fire. On a hot, windy summer day this year in Midway, Utah, embers from a small campground fire were fanned into a raging forest fire that soon swept over the entire mountainside. Before the flames were brought under control, the lives of two outstanding members of the Church were lost. The roaring fire had destroyed the beautiful autumn foliage, plus eighteen homes. We risk similar damage to our moral integrity when we let our guard down for even one brief moment. The spark of an evil thought can enter our mind that could ignite and destroy the moral fiber of our soul. – Joseph B. Wirthlin, “The Straight and Narrow Way,” Ensign (CR) November 1990