Need a Heart? Listen to the Tin Woodman

“Thereafter he walked very carefully, with his eyes on the road, and when he saw a tiny ant toiling by he would step over it, so as not to harm it. The Tin Woodman knew very well he had no heart, and therefore he took great care never to be cruel or unkind to anything. "You people with hearts," he said, "have something to guide you, and need never do wrong; but I have no heart, and so I must be very careful. When Oz gives me a heart of course I needn't mind so much.”
L. Frank Baum, The Wonderful Wizard of Oz  

I think the Tin Woodman could be our heart guide

Cheers