  Bacon, who tried to conceive of a unified physics, rejected different modes of motion in the superlunary and in the sublunary world (Bacon I [1889], 329). He did not believe in the existence of the (crystalline) spheres nor in the macrocosm-microcosm analogy. He revised Paracelsian ideas thoroughly. He rejected the grounding of his theories in Scripture and paid no attention at all to Cabbalistic and Hermetic tendencies (Rees 1975b, 90–1). But he extended the explanatory powers of the quaternions to earthly phenomena such as wind and tides.