The poet John Keats, in a letter to his brother in 1817, writes how he was struck by the ideal quality for the literary mind:
Negative Capability—that is when man is capable of being in uncertainties, Mysteries, doubts, without any irritable reaching after fact and reason.
Encouraging how well my mind fits Keats' specifications. Lord knows I have the iuncertainty part nailed down. Though I find nothing irritable about reaching after fact and reason.