naïfness

Hence, if in fine—exposed hourly to the novelty and naïfness of so versatile, capricious, and momentarily contradictory a disposition—the admiration predominated above the marvel, he considered it did so but because it could not, by possibility, be withheld—never dreaming of a comparison with Grace Evrett, between whom and the rest he recognised an impassable line,—for it was she who had infused new life into his veins, and, long as that new life lasted, so long should herself be its inseparable essence.