In the delineation of character, Tacitus is unrivalled among historians, and has very few superiors among dramatists and novelists. By the delineation of character, we do not mean the practice of drawing up epigrammatic catalogues of good and bad qualities, and appending them to the names of eminent men. No writer, indeed, has done this more skilfully than Tacitus; but this is not his peculiar glory. All the persons who occupy a large space in his works have an individuality of character which seems to pervade all their words and actions. We know them as if we had lived with them. Claudius, Nero, Otho, both the Agrippinas, are masterpieces. But Tiberius is a still higher miracle of art. The historian undertook to make us intimately acquainted with a man singularly dark and inscrutable,--with a man whose real disposition long remained swathed up in intricate folds of factitious virtues, and over whose actions the hypocrisy of his youth, and the seclusion of his old age, threw a singular mystery. He was to exhibit the specious qualities of the tyrant in a light which might render them transparent, and enable us at once to perceive the covering and the vices which it concealed. He was to trace the gradations by which the first magistrate of a republic, a senator mingling freely in debate, a noble associating with his brother nobles, was transformed into an Asiatic sultan; he was to exhibit a character, distinguished by courage, self-command, and profound policy, yet defiled by all "th' extravagancy And crazy ribaldry of fancy." He was to mark the gradual effect of advancing age and approaching death on this strange compound of strength and weakness; to exhibit the old sovereign of the world sinking into a dotage which, though it rendered his appetites eccentric, and his temper savage, never impaired the powers of his stern and penetrating mind--conscious of failing strength, raging with capricious sensuality, yet to the last the keenest of observers, the most artful of dissemblers, and the most terrible of masters. The task was one of extreme difficulty. The execution is almost perfect. The talent which is required to write history thus bears a considerable affinity to the talent of a great dramatist. There is one obvious distinction. The dramatist creates; the historian only disposes. The difference is not in the mode of execution, but in the mode of conception. Shakspeare is guided by a model which exists in his imagination; Tacitus, by a model furnished from without. Hamlet is to Tiberius what the Laocoon is to the Newton of Roubilliac.