As the body of systematized knowledge increased, there presently arose a distinction, traceable very far back in the history of education, between esoteric and exoteric knowledge, the former--so far as there is a substantial difference between the two--comprising such knowledge as is primarily of no economic or industrial effect, and the latter comprising chiefly knowledge of industrial processes and of natural phenomena which were habitually turned to account for the material purposes of life.
This line of demarcation has in time become, at least in popular apprehension, the normal line between the higher learning and the lower.
It is significant, not only as an evidence of their close affiliation with the priestly craft, but also as indicating that their activity to a good extent falls under that category of conspicuous leisure known as manners and breeding, that the learned class in all primitive communities are great sticklers for form, precedent, gradations of rank, ritual, ceremonial vestments, and learned paraphernalia generally.
This is of course to be expected, and it goes to say that the higher learning, in its incipient phase, is a leisure-class occupation--more specifically an occupation of the vicarious leisure class employed in the service of the supernatural leisure class.

But this predilection for the paraphernalia of learning goes also to indicate a further point of contact or of continuity between the priestly office and the office of the savant.

In point of derivation, learning, as well as the priestly office, is largely an outgrowth of sympathetic magic; and this magical apparatus of form and ritual therefore finds its place with the learned class of the primitive community as a matter of course.

The ritual and paraphernalia have an occult efficacy for the magical purpose; so that their presence as an integral factor in the earlier phases of the development of magic and science is a matter of expediency, quite as much as of affectionate regard for symbolism simply.
This sense of the efficacy of symbolic ritual, and of sympathetic effect to be wrought through dexterous rehearsal of the traditional accessories of the act or end to be compassed, is of course present more obviously and in larger measure in magical practice than in the discipline of the sciences, even of the occult sciences.

But there are, I apprehend, few persons with a cultivated sense of scholastic merit to whom the ritualistic accessories of science are altogether an idle matter.