In §46, Kant defines genius as "the inborn predisposition of the mind through which nature gives the rule to art" (5:307). Because beautiful art cannot be created according to fixed rules, the artistic genius is a kind of channel for the way beauty appears spontaneously in nature. (My slideshow includes Angelus Silesius's "Die Rose" on this point: "The rose is without why.") For Kant, genius has a talent that cannot be learned or taught, and it cannot give an account of itself.