I found this rather powerful short sentence while reading MAPS OF THE MIND by Charles Hampden-Turner. According to Mr. Hampden-Turner, it is a quote (page 67) credited to Eli Wiesel, Nobel Peace Prize winner and author of NIGHT. I searched the Internet, but the closest I came across was "no human being is illegal.' No doubt, 'man is not human' is extremely Herculean but I would be disappointed if Mr. Wiesel was misquoted.