the lights are on but nobody's home TheFreeDictionarycomBeams brighten a residence, but when it comes to nobody, they remain unperceived. Dwellings without individual presence remain unlit. Absence of people to light up the lamp, nobody's property to lighten up. Empty houses stay void of light, leaving the lamps
meaningless. Light seeks individuals, but in absence of people's residence, there's not a soul to illuminate.