"There is no true expertise in the humanities without knowing all of the humanities. Art is a vast, ancient interconnected web-work, a fabricated tradition. Over-concentration on any one point is a distortion."

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Thus we conclude, that the strata both primary and secondary, both those of ancient and those of more recent origin, have had their materials furnished from the ruins of former continents, from the dissolution of rocks, or the destruction of animal or vegetable bodies, similar, at least in some respects, to those that now occupy the surface of the earth.

— John Playfair