“To know anything,” returned the poet, “we must know its effects; to see men, we must see their works, that we may learn what reason has dictated or passion has excited, and find what are the most powerful motives of action. To judge rightly of the present, we must oppose it to the past; for all judgment is comparative, and of the future nothing can be known. The truth is that no mind is much employed upon the present; recollection and anticipation fill up almost all our moments. Our passions are joy and grief, love and hatred, hope and fear. Of joy and grief, the past is the object, and the future of hope and fear; even love and hatred respect the past, for the cause must have been before the effect. “The present state of things is the consequence of the former; and it is natural to inquire what were the sources of the good that we enjoy, or the evils that we suffer. If we act only for ourselves, to neglect the study of history is not prudent. If we are entrusted with the care of others, it is not just. Ignorance, when it is voluntary, is criminal; and he may properly be charged with evil who refused to learn how he might prevent it. “There is no part of history so generally useful as that which relates to the progress of the human mind, the gradual improvement of reason, the successive advances of science, the vicissitudes of learning and ignorance (which are the light and darkness of thinking beings), the extinction and resuscitation of arts, and the revolutions of the intellectual world. If accounts of battles and invasions are peculiarly the business of princes, the useful or elegant arts are not to be neglected; those who have kingdoms to govern have understandings to cultivate. “Example is always more efficacious than precept. A soldier is formed in war, and a painter must copy pictures. In this, contemplative life has the advantage. Great actions are seldom seen, but the labours of art are always at hand for those who desire to know what art has been able to perform. “When the eye or the imagination is struck with any uncommon work, the next transition of an active mind is to the means by which it was performed. Here begins the true use of such contemplation. We enlarge our comprehension by new ideas, and perhaps recover some art lost to mankind, or learn what is less perfectly known in our own country. At least we compare our own with former times, and either rejoice at our improvements, or, what is the first motion towards good, discover our defects.” “I am willing,” said the Prince, “to see all that can deserve my search.” “And I,” said the Princess, “shall rejoice to learn something of the manners of antiquity.”