For seeing life is but a motion of Limbs, the beginning whereof is in some principal part within; why may we not say, that all Automata (Engines that move them- selves by springs and wheels as doth a watch) have an artificial life? For what is the Heart, but a Spring; and the Nerves, but so many Strings; and the Joints, but so many Wheeles, giving motion to the whole Body, such as was intended by the Artificer?