Two Kinds of Laws: Clear and Ambiguous

From David Daube, the renowned scholar of biblical and Roman law, who was a professor at Oxford and Berkeley among other places:

"As regards interpretation, the author of the Rhetoric to Alexander distinguishes between laws which are clear and laws which are ambiguous. I have never come across any of the former kind."

(The quote is from Daube's collected works, volume 4, page 186.)