Read it through once

“No, you are wrong there. Discretion hasn’t anything to do with brains; brains are an obstruction to it, for it does not reason, it feels. Perfect discretion means absence of brains. Discretion is a quality of the heart—solely a quality of the heart; it acts upon us through feeling. We know this because if it were an intellectual quality it would only perceive a danger, for instance, where a danger exists; whereas—”