“had been hardened and seasoned over the last two years.”
Charlie Weis
“Wherefore then do ye harden your hearts, as the Egyptians and Pharaoh hardened their hearts? when he had wrought wonderfully among them, did they not let the people go, and they departed? / Now therefore make a new cart, and take two milch kine, on which there hath come no yoke, and tie the kine to the cart, and bring their calves home from them: / And take the ark of the LORD, and lay it upon the cart; and put the jewels of gold, which ye return him for a trespass offering, in a coffer by the side thereof; and send it away, that it may go.”
Bible
“Have a heart that never hardens, and a temper that never tires, and a touch that never hurts.”
Charles Dickens
“The world either breaks or hardens the heart”
Chamfort
“Broadway is a main artery of New York life - the hardened artery”
Walter Winchell
“It shall never be said that my sorrow has hardened me toward others.”
Glenway Wescott
“Far from hardening our position, ... I think it's fair to say we have been flexible and forthcoming in our negotiating stance.”
David Andrews