" There are things that, when they break, they keep on functioning, just in some other, lesser way. Like an elevator: it breaks, and it's a room. An escalator: it breaks, and it's stairs

The heart is the same.

It breaks, and you might not even notice, because you still feel things, you still have emotions.

But there's a dimension missing, like for the elevator; it still works as a room, but it has lost its vertical axis of motion, and it's the same with a heart: it breaks, and yeah, you can still have feelings, you can still feel sorry for someone, or angry, or sad, but there's something that's lost, a motion, a dimension. It breaks, and it's just an organ, beating. "

― Nick Lake , There Will Be Lies