"Brown and Dilke walked with me back from Christmas pantomime. I had not a dispute but a disquisition with Dilke, on various subjects; several things dovetailed in my mind, & at once it struck me, what quality went to form a Man of Achievement especially in literature & which Shakespeare possessed so enormously - I mean Negative Capability, that is when man is capable of being in uncertainties, Mysteries, doubts without any irritable reaching after fact & reason."
(Letter from John Keats to George and Thomas Keats dated Sunday, December 22, 1817)
