Necessity of Hell and Heaven
The confrontation, co-existence, and intermingling of good and evil, pleasure and pain, light and darkness, heat and cold, beauty and ugliness, and guidance and misguidance in the universe are there for an extremely important purpose and are full of wisdom. If there were no evil, the existence of good would be indiscernible. If there were no pain, pleasure would have no meaning. Light without darkness would have no importance and the different degrees of heat are realized only through the existence of cold. Through ugliness, a single truth of beauty becomes a thousand truths, and thousands of varying degrees of beauty come into existence. If there were no Hell, many of the pleasures of Paradise would remain hidden. Extrapolating from these examples we see that in one respect everything becomes known through its opposite; a single truth contained in any one thing produces numerous shoots and becomes numerous truths. Since these intermingled beings flow from this transient abode into the abode of eternal permanence, certainly, just as things such as good, pleasure, light, beauty, and belief flow into Paradise, so harmful matters such as evil, pain, darkness, ugliness, and unbelief pour into Hell. The floods of this continuously agitated universe are emptied into these two lakes.