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Updated: October 17, 2026
Accordingly, we shall recognise the same forms under other names; but at each return more specific and intense; and the whole process repeated with ascending gradations of reality, exempli gratiâ: Time + space = motion; Tm + space = line + breadth = depth; depth + motion = force; Lf + Bf = Df; LDf + BDf = attraction + repulsion = gravitation; and so on, even till they pass into outward phenomena, and form the intermediate link between productive powers and fixed products in light, heat, and electricity.