“The end of the day, it’s, the problem is the human heart. It’s not guns ... splendidly green and impervious to pain; or efficient, 3D-printed e-hearts; or anatomically inaccurate paper ...

Never before in recorded history had any human being laid eyes ... The king reached in and touched the heart with three fingers and his thumb. "Does it hurt?" the king asked.

The Human Heart: A Perfect Spiral Mystery At the center of this dizzying array lay the sacred secret that had so profoundly occupied Aristotle and Aquinas, Leonardo and Vesalius—the human heart.