Now commences the reign of judgment or reason; we begin to find little pleasure but in comparing arguments, stating propositions, disentangling perplexities, clearing ambiguities, and deducing consequences. The painted vales of imagination are deserted, and our intellectual activity is exercised in winding through the labyrinths of fallacy, and toiling with firm and cautious steps up the narrow tracks of demonstration. Whatever may lull vigilance, or mislead attention, is contemptuously rejected, and every disguise in which errour may be concealed, is carefully observed, till, by degrees, a certain number of incontestable or unsuspected propositions are established, and at last concatenated into arguments, or compacted into systems. At length weariness succeeds to labour, and the mind lies at ease in the contemplation of her own attainments, without any desire of new conquests or excursions. This is the age of recollection and narrative; the opinions are settled, and the avenues of apprehension shut against any new intelligence; the days that are to follow must pass in the inculcation of precepts already collected, and assertion of tenets already received; nothing is henceforward so odious as opposition, so insolent as doubt, or so dangerous as novelty. In like manner the passions usurp the separate command of the successive periods of life. To the happiness of our first years nothing more seems necessary than freedom from restraint: every man may remember that if he was left to himself, and indulged in the disposal of his own time, he was once content without the superaddition of any actual pleasure. The new world is itself a banquet; and, till we have exhausted the freshness of life, we have always about us sufficient gratifications: the sunshine quickens us to play, and the shade invites us to sleep. But we soon become unsatisfied with negative felicity, and are solicited by our senses and appetites to more powerful delights, as the taste of him who has satisfied his hunger must be excited by artificial stimulations. The simplicity of natural amusement is now past, and art and contrivance must improve our pleasures; but, in time, art, like nature, is exhausted, and the senses can no longer supply the cravings of the intellect.