“I give it a fifty-fifty chance of total failure. If Kai refuses to repay a debt he legitimately owes, he'll be dishonoured in front of his entire Flight. Thunderbirds always avenge their dead, honour their word, and pay their debts. Those seem to be the only laws they have." Based on what little time I'd spent with them. Marc frowned. "It's the 'legitimately owes' part that worries me." "Thus the fifty-fifty shot of failure." I stared up at the nest, watching for any sign of activity. "It all depends on whether or not I'm able to bullshit him into thinking he owes us." "The odds are always in your favour when bullshit's involved." Jace grinned, and I couldn't help returning his smile.”

“We owe God a "double debt" incurred by our passive receipt of Adam's debt but also by our active disobedience. The extent of our depravity is such that we also owe a "daring debt" because we challenge not only God's Law but His very grace as we blame Him that He has not done enough.”

“Worrying is like paying a debt you don't owe.”

“Human beings owe a debt of love to one another because there is no other method of paying the debt of love and care which all of us owe to providence.”

“Worry is the interest you pay on a debt you may not owe.”

“The Sikh gave him the money. When Menon asked for his address so that he could repay the man, the Sikh said that Menon owed the debt to any stranger who came to him in need, as long as he lived. The help came from a stranger and was to be repaid to a stranger.”