"Hence the strong attraction which magic and science alike have exercised on the human mind; hence the powerful stimulus that both have given to the pursuit of knowledge. They lure the weary enquirer, the footsore seeker, on through the wilderness of disappointment in the present by their endless promises of the future: they take him up to the top of an exceeding high mountain and show him, beyond the dark clouds and rolling mists at his feet, a vision of the celestial city, far off, it may be, but radiant with unearthly splendour, bathed in the light of dreams."