Between the characters of Macbeth and his wife the dramatist has drawn a subtle but vital distinction. Macbeth is an unprincipled but imaginative man, with a strong tincture of reverence and awe. Hitherto he has been restrained in the straight path of an upright life by his respect for conventions. When once that barrier is broken down, he has no purely moral check in his own nature to replace it, and rushes like a flood, with ever growing impetus, from, crime to crime. His {189} wife, on the other hand, has a conscience; and conscience, unlike awe for conventions, can be temporarily suppressed, but not destroyed. It reawakes when the first great crime is over, drives the unhappy queen from her sleepless couch night after night, and hounds her at last to death. This is the shortest of all Shakespeare's plays in actual number of lines; and no other work of his reveals such condensation and lightning-like rapidity of movement. It is the tragedy of eager ambition, which allows a man no respite after the first fatal mistake, but hurries him on irresistibly through crime after crime to the final disaster. Over all, like a dark cloud above a landscape, hovers the presence of the supernatural beings who are training on the sinful but unfortunate monarch to his ruin. +Authorship+.--The speeches of Hecate and the dialogue connected with them in III, v and IV, i, 39-47 are suspected by many to be the work of Thomas Middleton, a well-known contemporary playwright. They are unquestionably inferior to most of the play. Messrs. Clark and Wright have assigned several other passages to Middleton; but these are now generally regarded as Shakespeare's, and some of them are considered as by no means below his usual high level. +Date+.--We find no copy of _Macbeth_ earlier than the First Folio. It was certainly written before 1610, however; for Dr. Simon Forman saw it acted that year and records the fact in his _Booke of Plaies_. The allusion to "two-fold balls and treble sceptres" (IV, i, 121) shows that the play was written after 1603 when James I became king of both Scotland and England. So does the allusion to the habit of touching for the king's evil (IV, iii, 140-159),--a custom which James revived. The reference to an equivocator in the porter's soliloquy (II, iii) may allude to Henry Garnet, who was tried in 1606 for complicity in the {190} famous Gunpowder Plot, and who is said to have upheld the doctrine of equivocation. The date of composition is usually placed 1605-6. +Sources+.--The plot is borrowed from Holinshed's _Historie of Scotland_. Most of the material is taken from the part relating to the reigns of Duncan and Macbeth; but other incidents, such as the drugging of the grooms, are from the murder of Duncan's ancestor Duffe, which is described in another part of Holinshed.