Unifying Approach to Life: 'Is this wisdom or folly?'

"But it [Book of Proverbs] is not a portrait-album or a book of manners: it offers a key to life. The samples of behaviour which it holds up to view are all assessed by one criterion, which could be summed up in the question, 'Is this wisdom or folly?' This is a unifying approach to life, because it suits the most commonplace realms as fully as the most exalted. Wisdom leaves its signature on anything well made or well judged, from an apt remark to the universe itself, from a shrewd policy (which springs from practical insight) to a noble action (which presupposes moral and spiritual discernment). In other words, it is equally at home in the realms of nature and art, of ethics and politics, to mention no others, and forms a single basis of judgment for them all" (Derek Kidner, The Tyndale Old Testament Commentaries: The Proverbs, 13).