While one philosopher[27] affirms That by our senses we're deceived, Another[28] swears, in plainest terms, The senses are to be believed. The twain are right. Philosophy Correctly calls us dupes whene'er Upon mere senses we rely. But when we wisely rectify The raw report of eye or ear, By distance, medium, circumstance, In real knowledge we advance. These things hath nature wisely plann'd-- Whereof the proof shall be at hand. I see the sun: its dazzling glow Seems but a hand-breadth here below; But should I see it in its home, That azure, star-besprinkled dome, Of all the universe the eye, Its blaze would fill one half the sky. The powers of trigonometry Have set my mind from blunder free. The ignorant believe it flat; I make it round, instead of that. I fasten, fix, on nothing ground it, And send the earth to travel round it. In short, I contradict my eyes, And sift the truth from constant lies. The mind, not hasty at conclusion, Resists the onset of illusion, Forbids the sense to get the better, And ne'er believes it to the letter. Between my eyes, perhaps too ready, And ears as much or more too slow, A judge with balance true and steady, I come, at last, some things to know. Thus when the water crooks a stick,[29] My reason straightens it as quick-- Kind Mistress Reason--foe of error, And best of shields from needless terror! The creed is common with our race, The moon contains a woman's face. True? No. Whence, then, the notion, From mountain top to ocean? The roughness of that satellite, Its hills and dales, of every grade, Effect a change of light and shade Deceptive to our feeble sight; So that, besides the human face, All sorts of creatures one might trace. Indeed, a living beast, I ween, Has lately been by England seen. All duly placed the telescope, And keen observers full of hope, An animal entirely new, In that fair planet, came to view. Abroad and fast the wonder flew;-- Some change had taken place on high, Presaging earthly changes nigh; Perhaps, indeed, it might betoken The wars[30] that had already broken Out wildly o'er the Continent. The king to see the wonder went: (As patron of the sciences, No right to go more plain than his.) To him, in turn, distinct and clear, This lunar monster did appear.-- A mouse, between the lenses caged, Had caused these wars, so fiercely waged! No doubt the happy English folks Laugh'd at it as the best of jokes. How soon will Mars afford the chance For like amusements here in France! He makes us reap broad fields of glory. Our foes may fear the battle-ground; For us, it is no sooner found, Than Louis, with fresh laurels crown'd, Bears higher up our country's story.