“The list of things which we absolutely know, is not a long one, and we have not the luck to add a fresh one to it often, but I recognized that I had added one to mine this day. I knew, now, that it isn’t safe to sit in judgment upon another person’s illusion when you are not on the inside. While you are thinking it is a dream, he may be knowing it is a planet.”
–Mark Twain, A Thousand Years Among the Microbes

There is little that we can be sure we really know. And what it is we may be most sure of might appear as the wisp of an illusion to another.

We best deal with our own illusions than pass judgment on someone else’s.