ABANDON ALL HOPE YE WHO ENTER HERE

In smaller text beneath it, a newer sign reads:

Additional prohibited items and concepts include purity, altruism, gentleness, moderation, doubt, fairness, magical artifacts, doomsday devices, and over 3 oz of true love. Antimatter must be carried in a transparent container. For a complete list of prohibited items, visit our website. Prohibitions and penalties are subject to change without notice.