We see the visible world as somehow inevitable, with all its ratios of movement & rest, its manifold shapes & ecstatic forms, not realising that nature is always busy, acting unseen in all its power, without external cause, producing within itself its own effects, differentiating this idea from that idea, bypassing one potential in favour of another, & making actual a particular mode of being (a mutation, a thing, a body, a colour), while keeping other potentials, other singu