Our organ of sight, our organ of locomotion, our physical strength becomes world-wide; steam and electricity become our nerve and muscle. Thus we find that, just as throughout our bodily organisation there is a principle of relation by virtue of which we can call the entire body our own, and can use it as such, so all through the universe there is that principle of uninterrupted relation by virtue of which we can call the whole world our extended body and use it accordingly.
