LI.

Thus, Heaven enlarged his soul in riper years. For Nature gave him strength, and fire, to soar, On Fancy's wing above this vale of tears; Where dark cold-hearted sceptics, creeping, pore Through microscope of metaphysic lore: And much they grope for truth, but never hit. For why? their powers, inadequate before, This art preposterous renders more unfit; Yet deem they darkness light, and their vain blunders wit.