A taste for collecting portraits, or busts, was warmly pursued in the happier periods of Rome; for the celebrated Atticus, in a work he published of illustrious Romans, made it more delightful, by ornamenting it with the portraits of those great men; and the learned Varro, in his biography of Seven Hundred celebrated Men, by giving the world their true features and their physiognomy _in some manner, aliquo modo imaginibus_ is Pliny's expression, showed that even their persons should not entirely be annihilated; they indeed, adds Pliny, form a spectacle which the gods themselves might contemplate; for if the gods sent those heroes to the earth, it is Varro who secured their immortality, and has so multiplied and distributed them in all places, that we may carry them about us, place them wherever we choose, and fix our eyes on them with perpetual admiration. A spectacle that every day becomes more varied and interesting, as new heroes appear, and as works of this kind are spread abroad. But as printing was unknown, to the ancients (though _stamping an impression_ was daily practised, and, in fact, they possessed the art of printing without being aware of it[22]), how were these portraits of Varro so easily propagated? If copied with a pen, their correctness was in some danger, and their diffusion must have been very confined and slow; perhaps they were outlines. This passage of Pliny excites curiosity difficult to satisfy; I have in vain inquired of several scholars, particularly of the late Grecian, Dr. Burney. A collection of the portraits of illustrious characters affords not only a source of entertainment and curiosity, but displays the different modes or habits of the time; and in settling our floating ideas upon the true features of famous persons, they also fix the chronological particulars of their birth, age, death, sometimes with short characters of them, besides the names of painter and engraver. It is thus a single print, by the hand of a skilful artist, may become a varied banquet. To this Granger adds, that in a collection of engraved portraits, the contents of many galleries are reduced into the narrow compass of a few volumes; and the portraits of eminent persons, who distinguished themselves through a long succession of ages, may be turned over in a few hours. "Another advantage," Granger continues, "attending such an assemblage is, that the methodical arrangement has a surprising effect upon the memory. We see the celebrated contemporaries of every age almost at one view; and the mind is insensibly led to the history of that period. I may add to these, an important circumstance, which is, the power that such a collection will have in _awakening genius_. A skilful preceptor will presently perceive the true bent of the temper of his pupil, by his being struck with a Blake or a Boyle, a Hyde or a Milton."