If we are to believe Cogito, ergo sum (= "I think, therefore I am"), the only thing I can be sure of is that I exist. However, as cool as I may be, I doubt my mind alone could conceive the superb action heroes listed on this page including Saladin, Walt Disney, Jim Henson, and Aristotle - most of whom have ample evidence for being real. And given my present mediocre Inkscape 2-D vector graphics skills, I am enthralled even by the 2-and-a-half dimensions graphics of some 1990s computer games (e.g: Monkey Island 2 ; Street Fighter II ; Quest for Glory III) and those of My Little Pony: Friendship is Magic .
Let me share a non-secret: what I wrote here is a simplification ( References: "Honesty is a process", "can’t help speaking in riddles" ).