I’m reading through Keller’s Reason for God and came upon this quote from the “late Yale law professor Arthur Leff” that perked my interest as Keller discusses the conundrum of human dignity:
When would it be impermissible to make the formal intellectual equivalent of what is known in barrooms and schoolyards as “the grand Sez Who?” In the absence of God…each…ethical and legal system…wil be differentiated by the answer it chooses to give to one key question: who among us…ought to be able to declare “law” that ought to be obeyed? Stated that baldly, the question is so intellectually unsettling that one would expect to find a noticeable number of legal and ethical thinkers trying not to come to grips with it…Either God exists or He does not, but if He does not, nothing and no one else can take his place…