Common-sense

"In fact, such unfortunate persons have no resource but to become what we call Pedants; to ensconce themselves in a safe world of habitudes, of applicable or inapplicable traditions; not coveting, rather avoiding the general daylight of common-sense, as very extraneous to them and their procedure; by long persistence in which course they become Completed Pedants, hidebound, impenetrable, able to defy the hostile extraneous element; an alarming kind of men"