This quote suggests that in an environment populated by individuals who lack wisdom or insight (the "land of fools"), actions or ideas that might ordinarily be considered foolish or unwise can become highly valuable or appreciated. The phrase "every folly is worth its weight in gold" implies that what is generally deemed unworthy or nonsensical takes on a new significance in such a context, as it stands out against the backdrop of ignorance. Essentially, it highlights how the relative worth of actions can change depending on the surrounding circumstances and the common understanding of those around us.
Quote By: Oscar Wilde