creativity as an ingredient of madness

It's always been said that the truly creative people are a little mad, or at least wear really weird hats and mumble to themselves. Natch. I think it's part myth, partly true. For some reason I had the sudden mental image of a man fluttering his arms about, like wings, and all yellow. It's like the madness of birds. Arcellana, natch. Isn't his first death anniversary somewhere along this timeline? Must be it.