String.

"it is as if I had a string somewhere under my left ribs, tightly and inextricably knotted to a similar string situated in the corresponding quarter of your little frame. And if that boisterous channel, and two hundred miles or so of land come broad between us, I am afraid that cord of communion will be snapped; and then I've a nervous notion I should take to bleeding inwardly."

Mr Rochester to Jane. Jane Eyre by Charlotte Bronte.

Artwork by Claire Falkenberg, via Abundance.