David Walsh - the creator of Mona in Hobart - is both a giant and an enigma in the Australian art world. A multi-millionaire who made his money gambling, David has turned a wild vision into a unique reality; he is in turns controversial, mysterious and idolised. A Bone of Fact is his utterly unconventional and absorbing memoir, about which he says: 'By some great good fortune (mine, not yours) you hold in your hands my story, credible I think, but not extraordinary (despite what those avaricious publishers might have you believe). I have captured your attention: maybe you have some resonance with Mona, or maybe good graphical design partly seized your day. To extract 55 bucks from you I need to say something clever, but I can't think of anything.