The Lost Weekend
written by Charles Brackett & Billy Wilder, from the novel by Charles R. Jackson

Don: It shrinks my liver, doesn't it? It pickles my kidneys, yes. But what does it do to my mind? It tosses the sandbags overboard so the balloon can soar. Suddenly, I'm above the ordinary. I'm competent, supremely competent. I'm walking a tightrope over Niagara Falls. I'm one of the great ones. I'm Michelangelo, molding the beard of Moses. I'm Van Gogh, painting pure sunlight. I'm Horowitz, playing the Emperor Concerto. I'm John Barrymore before the movies got him by the throat. I'm Jesse James and his two brothers - all three of 'em. I'm W. Shakespeare. And out there it's not Third Avenue any longer - it's the Nile, Nat - the Nile - and down it moves the barge of Cleopatra. Come here..