Have you ever wondered why there seems to be a built-in dissatisfaction attached to all human endeavor, such that no amount of wealth, pleasure, or success can free us from the nagging suspicion that there simply must be more to life than what we see around us? Whether displayed in film, art, popular music, or in the depths of our own hearts, human frustration with the status quo is inescapable. Perhaps the reason for this is the fact that God has hardwired us for heaven and instilled within...