With this essay, Kant synthesize Newton with his own theory of forces, leading Kant to the cutting edge of current knowledge. Nature, in the Universal Natural History, streams outward in a wavefront of organization (1:314.1–2), generating worlds (1:314.8), biospheres and sentience (1:317.5–13, 352–3), and finally reason, human and otherwise (1:351–66). Organization is fragile, and spontaneity, pushed far enough, invites chaos. Mature cosmic regions decay, chaos sets in, and entropy follows in the wake of complexity. But entropy provides the very conditions that allow the cosmic pulse to bounce material points back to order. Thus the expanding chaos coalesces at its center into order, followed by chaos, by order, by chaos. Like a rising and burning phoenix, nature cycles between life and death (1:312.13).