Supposedly юродивый in Russian, and explained (in an excerpt from Ernst G. Benkert's 623 Titles Without Paintings, printed on a postcard offered at the Proteotypes table at the Brooklyn Book Fair yesterday--I was one of the people handing it out) by Solomon Volkov:
There is no word in any other language that can precisely convey the meaning of the Russian word yurodivy, . . . . .The yurodivy has the gift to see and hear what others know nothing about.
I don't know if David the Dendrite, who apparently took up residence in an almond tree, qualifies as a yurodivy, as he was Greek.