"You cannot do wrong and feel right. It's impossibile." 

Ezra T. Benson

What this statement is trying to say is never do something wrong to feel "cool" because it's never right! For example, you and your friend go to a store and see something you like and take off the tag and put it in your bag cause you like it you know it's wrong but you did still because it feels good to shoplift but when you try to exit the store you get caught by the cameras and for second it feel right when you knew it was wrong, and what Benson is trying to say is never do something bad in your life so i could feel right cause they're consequences for what you do in your life.