His queen and all the nobles, who saw nothing, but perceived him gazing upon an empty chair, took it for a fit of distraction; and she reproached him, whispering that it was but the same fancy which made him see the dagger in the air when he was about to kill Duncan. But Macbeth continued to see the ghost, and gave no heed to all they could say, while he addressed it with distracted words, yet so significant that his queen, fearing the dreadful secret would be disclosed, in great haste dismissed the guests, excusing the infirmity of Macbeth as a disorder he was often troubled with. To such dreadful fancies Macbeth was subject. His queen and he had their sleeps afflicted with terrible dreams, and the blood of Banquo troubled them not more than the escape of Fleance, whom now they looked upon as father to a line of kings who should keep their posterity out of the throne. With these miserable thoughts they found no peace, and Macbeth determined once more to seek out the weird sisters and know from them the worst.