The Doctor meets Walt Whitman.
“The touch of [the greatest poet] tells in action. Whom he takes he takes with firm sure grasp into live regions previously unattained … thenceforward is no rest … they see the space and ineffable sheen that turn the old spots and lights into dead vacuums. The companion of him beholds the birth and progress of stars and learns one of the meanings. Now there shall be a man cohered out of tumult and chaos … the elder encourages the younger and shows him how … they two shall launch off fearlessly together till the new world fits an orbit for itself and looks unabashed on the lesser orbits of the stars and sweeps through the ceaseless rings and shall never be quiet again.”
— Walt Whitman, from the preface to Leaves of Grass, 1855