Classic Poem

Is Doubt mine enemy? a subtle thief
Who creeps into the darkness of my mind
With potions to benumb and thongs to bind,
Insidiously to steal away belief
And purloin faith, that I beyond reprief
Must languish, so imprisoned, doubly blind,
Of God forgotten and by men consigned
To retribution and unpardoned grief?
Nay, Doubt awakened me from open-eyed
Somnambulism; — my unconscious way
Led on toward beetling crags and chasms wide!
Dismayed I woke; the stars seemed all astray!
But soon came Reason to my wandering soul
And showed me Ursa Major and the Pole.