It is a common delusion that the great periods of culture have been ages of hereditary aristocracy: on the contrary, the efflorescent periods of Pericles and the Medici and Elizabeth and the Romantic age were nourished with the wealth of a rising bourgeoisie; and the creative work in literature and art was done not by aristocratic families but by the offspring of the middle class;—by such men as Socrates, who was the son of a midwife, and Voltaire, who was the son of an attorney, and Shakespeare, who was the son of a butcher.