Who 's figure is at the center of Michelangelo 's " The Last Judgement " ?
John O'Malley points out that even earlier than the Isaiah is Raphael 's inclusion of the figure of Heraclitus in the " School of Athens " , a brooding figure similar to Michelangelo 's Jeremiah , but with the countenace of Michelangelo himself , and leaning on a block of marble .