whitArdent Brooklynite and 19th Century rebel poet, Walt Whitman, will be celebrated at Brooklyn Bridge Park today (5pm-12am) with a Walt-a-thon “I Do Not Doubt I am Limitless: Walt Whitman’s Brooklyn.” His enduring appeal is in his sensual, almost psychedelic free verse, but also his lusty love of Brooklyn. There’ll be music and a park-wide marathon reading of the American epic ‘Leaves of Grass.’