“It comes as news to most people to learn that practically all important ethical teachers -- Moses, Aristotle, Jesus, Mohammed, and Saint Thomas Aquinas, for instance -- have denounced lending at interest as usury and as morally wrong.”

Dennis was a Commumist and of course he was against anything Capitalist.

Oppression, ( a loan with a sting ). usury. economic slavery if practiced upon ones own children. Chophshiy (economic) Liberty, denied. 

Not shooting the messenger — absolutely!  Such interest sucks the means of progress out of a viable economy.

Read the article.  It is a review of a study 'The Internal Debts of the United States.'  It doesn't sound like it's written by a communist, quite the opposite.  The issues raised are as clear as day, written in the time FDR was racking up debts to the Moon.  The only way he could do that is with fiat currency and taking gold out of circulation.

Mohammed, an ethical teacher: I think not.