"And Hercules, who slew the serpent which led and guarded riches, is the true philosophical reason which, free from all wickedness, wanders all over the world, visiting the souls of men, and chastising all it meets, -- namely, men like fierce lions, or timid stags, or savage boars, or multiform hydras; and so with all the other fabled labours of Hercules, they all have a hidden reference to moral valour. But these instances must suffice, for all our time would be insufficient if we were to go over each one.