The use of intrigue is certainly well calculated to effect the all-desired short duration of an important action. For the intriguer is ever expeditious, and loses no time in attaining to his object. But the mighty course of human destinies proceeds, like the change of seasons, with measured pace: great designs ripen slowly; stealthily and hesitatingly the dark suggestions of deadly malice quit the abysses of the mind for the light of day; and, as Horace, with equal truth and beauty observes, "the flying criminal is only limpingly followed by penal retribution." [Footnote: Rarò antecedentem scelestum Deseruit pede paena claudo.--TRANS.] Let only the attempt be made, for instance, to bring within the narrow frame of the Unity of Time Shakspeare's gigantic picture of Macbeth's murder of Duncan, his tyrannical usurpation and final fall; let as many as may be of the events which the great dramatist successively exhibits before us in such dread array be placed anterior to the opening of the piece, and made the subject of an after recital, and it will be seen how thereby the story loses all its sublime significance. This drama does, it is true, embrace a considerable period of time: but does its rapid progress leave us leisure to calculate this? We see, as it were, the Fates weaving their dark web on the whistling loom of time; and we are drawn irresistibly on by the storm and whirlwind of events, which hurries on the hero to the first atrocious deed, and from it to innumerable crimes to secure its fruits with fluctuating fortunes and perils, to his final fall on the field of battle. Such a tragic exhibition resembles a comet's course, which, hardly visible at first, and revealing itself only to the astronomic eye, appears at a nebulous distance in the heavens, but soon soars with unheard-of and accelerating rapidity towards the central point of our system, scattering dismay among the nations of the earth, till, in a moment, when least expected, with its portentous tail it overspreads the half of the firmament with resplendent flame.