"We stand at the crossroads, each minute, each hour, each day, making choices.  We choose the thoughts we allow ourselves to think, the passions we allow ourselves to feel, and the actions we allow ourselves to perform.  Each choice is made in the context of whatever value system we've selected to govern our lives.  In selecting the value system, we are, in a very real way, making the most important choice we will ever make...

"...Since the foundation of  all happiness is thinking rightly, and since correct action is dependent on correct opinion, we cannot be too careful in choosing the value system we allow to govern our thoughts and actions.  

"And to know that God governs in the affairs of men, that he hears and answers prayers, and that he is a rewarder of them that diligently seek Him, is indeed, a powerful regulator of human conduct."  --Benjamin Franklin

Quoted by Elder Ballard, Ensign, March 2009, pg. 54