Mansur Al-Hallaj

I was researching the layers of the pericardial sac for our first anatomy exam, which is Thursday, and I ran across Mansur Al'Hallaj, a 9th-10th century Persian mystic/revolutionary, maybe not an unusual combination in its day, and his description of God through a beautiful anatomically-relevant analogy:

God is He "who flows between the pericardium and the heart, just as the tears flow from the eyelids."