Which will not listen to the voice of charmers, charming never so wisely.
Which. That serpents might be charmed or rendered harmless was well known to the ancients. Virgil, and many others state the fact:--Frigidus in pratis cantando, rumpitur anguis `In the meadows the cold snake is burst by incantation.'
charming never so wisely. or, be the charmer never so cunning