"Calvin had once told a questioner in 1545, 'If we wholly condemn usury, we impose tighter fetters on the conscience than God himself,' and that would never do. Once that is believed - and already by 1612, with Bacon's great essay
On Usuary, the problem is of high interest, of expediency not sin - all manner of avenues open to the ingenuity."
James Buchan Frozen Desire (1997) p.113