This tragedy was slowly conceived during the married life of Macbeth and his Lady. Their ambitious desires spent years in collusion before an heir of opportunity was born to them. The rapid and breathless action of the earlier scenes makes clear to us that it does not flow from any sudden resolution. The past years topple in the wave that combs to break into this sweeping surge. The movement of the play is unnatural, unless we admit that the married couple have grown familiar with many projects, all of which make them languish for occasion. Macbeth has revelled in the idea that if the chance offered he possesses every other quality to supplant Duncan,--ambition, audacity, swiftness, all good fortune, except a turn of circumstance. He discovers at the juncture that his wife is the only aptitude he can contribute to it. She remembers his profuse suggestions with a touch of scorn. Is he a man? "What beast was it, then, That made you break this enterprise to me? When you durst do it, then you were a man; ... Nor time, nor place, Did then adhere, and yet you would make both; They have made themselves, and that their fitness now Does unmake you." Strenuous in fantasy, "infirm of purpose." The sudden crisis betrays the secret pinings of past years for such an hour. The whispered conferences swell into a din: it shouts to tell us how their pillows touched, when darkness brooded in vain upon eyelids that were set wide open with a stare at a gleam of greatness far outside their chamber. We overhear, without ever having played eavesdropper, the anxious interchange of feeling beneath the garden aspens, which might catch their tremor from these two beings who passed hankering to and fro; he encouraging a reverie, she trying to chastise it into action with the valor of her tongue. Thus the years passed, while he alternated between the grand loyalty of many a fight and the treachery which grew warm upon the bosom of his wife. Much given to pondering and pleased with vivid day-dreams, he sought no way to realize them. Well as she knew this musing vein of his, and much as it displeased her spirit of action, she will have to be re-enforced by opportunity. Then the deed, now rusting in its sheath of speculation, may possibly leap forth. His mind did not have the coupling which makes up wishing and doing into one train; so the doing stands some distance off idle on the track. The track which emerged from Hamlet's resolution met so many diverging lines at the controlling switch that he was in doubt upon which to run: at length, impatient chance unlocked the switch, and set the rail for a disaster. When Macbeth's wishing became linked to acting, he was not over-nice about his route. The subtle Hamlet considered till he could not start. The inconsiderate Macbeth, when he ceased to vapor and began to move, blundered with a full head of fantasy into ruin.