"That the difference between the beautiful and the ugly (...) has important psychological effect is a commonplace, except in the field of city planning. If it be not quoting the Devil for Scripture, Nietzsche has written: "All that is ugly weakens and afflicts man (...)"
Is "Quoting the Devil for Scripture" the reverse of the proverb "The Devil can cite Scripture for his purpose?"
Please explain the meaning (in the context) of the blue clause.
Thank you.
Cadzao