theme? The question raises puzzling issues. The commemorative instinct which biography has to satisfy scarcely seems to obey in its habitual working any. one clear immutable law. The Italian poet Ariosto imagined, with some allegorical vagueness, that at the end of every man's thread of life there hung a medal stamped with his name, and that, as Death severed life's thread with its fatal shears. Time seized the medal and dropped it into the river of Lethe. Yet a few, a very few, of the stamped medals were caught as they fell towards the waters of oblivion by swans, who carried off the medals and deposited them in a temple or museum of immortality. Ariosto's swans are biographers: by what motive are they impelled to rescue any medals of personality from the flood of forgetfulness into which they let the mass sink?
Perhaps the old Greek definition of the fit theme of tragedy may be usefully adapted to the fit theme of biography. A fit biographic theme is, in the Aristotelian phrase, a career which is "serious, complete and of a certain
