What do we call visible light? We call it color. But the electromagnetic spectrum runs to zero in one direction and infinity in the other, so really, children, mathematically, all of light is invisible.
Those who have lost their way, who are ravaged by addictions and feelings of hopelessness, believe they are alone. They have seemingly lost their soul and need to find a spiritual base. That base is love, which is the only permanent power in the universe. It is the central ingredient in healing and in all harmony. Recognize and realize the power of love and its dominion over all things, and you and others will be restored to a fearless place. Love will supplant the fear.