541. Hell, like heaven, is divided into societies, and into as many societies as there are in heaven; for every society in heaven has a society opposite to it in hell, and this for the sake of equilibrium. But evils and falsities therefrom are what distinguish the societies in hell, as goods and truths therefrom are what distinguish the societies in heaven. That for every good there is an opposite evil, and for every truth an opposite falsity may be known from this, that nothing can exist without relation to its opposite, and what anything is in kind and degree can be known from its opposite, and from this all perception and sensation is derived. For this reason the Lord continually provides that every society in heaven shall have an opposite in some society of hell, and that there shall be an equilibrium between the two.