Question: The Way to Dusty Death is taken from what quote from Macbeth?

Context paragraphs:
The Way to Dusty Death: The Way to Dusty Death is a thriller novel written by Scottish author Alistair MacLean.  It was originally published in 1973.  The title is a quotation from the famous soliloquy in Act 5, Scene 5 in Shakespeare’s play "Macbeth".

Light Thickens: Light Thickens is a detective novel by Ngaio Marsh; it is the thirty-second, and final, novel to feature Roderick Alleyn, and was first published in 1982.  The plot concerns the murder of the lead actor in a production of "Macbeth" in London, and the novel takes its title from a line in the play.  A number of characters in the book appeared previously in Marsh's novel "Death at the Dolphin".  The novel is dedicated to the actors James Laurenson and Helen Thomas who had played Macbeth and Lady Macbeth respectively in the author's 1962 production of the play, which she had previously directed, also for The Canterbury University Players, in 1946.

Three Witches: The Three Witches or Weird Sisters or Wayward Sisters are characters in William Shakespeare's play "Macbeth" (c. 1603–1607).  They hold a striking resemblance to the three "Fates" (in Greek mythology), and are, perhaps, intended as a twisted version of the white-robed incarnations of destiny.  The witches eventually lead Macbeth to his demise.  Their origin lies in "Holinshed's Chronicles" (1587), a history of England, Scotland and Ireland.  Other possible sources, aside from Shakespeare's imagination itself, include British folklore, such contemporary treatises on witchcraft as King James VI of Scotland's "Daemonologie", the Norns of Norse mythology, and ancient classical myths of the Fates: the Greek Moirai and the Roman Parcae.  Productions of "Macbeth" began incorporating portions of Thomas Middleton's contemporaneous play, "The Witch", "circa" 1618, two years after Shakespeare's death.

Tomorrow and tomorrow and tomorrow: Tomorrow and tomorrow and tomorrow is the beginning of the second sentence of one of the more famous soliloquies in Shakespeare's tragedy "Macbeth".  It takes place in the beginning of the 5th scene of Act 5, during the time when the English troops, led by Malcolm and Macduff, are approaching Macbeth's castle to besiege it.  Macbeth, the play's protagonist, is confident that he can withstand any siege from Malcolm's forces.  He hears the cry of a woman and reflects that there was a time when his hair would have stood on end if he had heard such a cry, but he is now so full of horrors and slaughterous thoughts that it can no longer startle him.

LaRose (novel): "LaRose" is set in North Dakota, on an Ojibwa reservation in the "era of George W. Bush and 9/11."  The novel's protagonist is LaRose Iron, a young Native American boy.  His father, Landreaux Iron, accidentally shoots LaRose's best friend and neighbor, Dusty Ravich, also 5 years old, in a hunting accident, when the buck Landreaux had aimed at suddenly moved from in front of the boy.  Dusty's parents, Peter and Nola, become devastated.  To compensate for their loss, following an ancient custom, LaRose's parents, Landreaux and Emmaline, give him to Dusty's family after speaking with a priest and visiting a sweat lodge, to find a way to resolve their guilt.

Daniel Van Kirk: Daniel Van Kirk (born Daniel Nall) is an American comedian, podcast personality, and writer from Rochelle, Illinois.  He earned his Bachelor of Fine Arts in theater performance from Roosevelt University.  He appears as himself and as comedic caricatures on several podcasts such as "Sklarbro Country" with Randy and Jason Sklar as a regular, "The Bear Down Podcast" and "The Todd Glass Show" as well as hosting "Hindsight with Daniel Van Kirk" on the Steve Dahl Network.  Van Kirk has appeared on Doug Benson's podcast, "Doug Loves Movies", in character as Mark Wahlberg.  A mini-game on the podcast is "Doing Lines with Mark", in which Van Kirk - either in person or via recording - will recite a film quote as Wahlberg; and a contestant must name the film where the quote is taken from.  Van Kirk has also appeared on the podcast in character as Steven Seagal.

In This Our Life (novel): In This Our Life is a 1941 novel by the American writer Ellen Glasgow.  It won the Pulitzer Prize for the Novel in 1942.  The title is a quote from the sonnet sequence "Modern Love" by George Meredith: "Ah, what a dusty answer gets the soul/ When hot for certainties in this our life!"

The Globe By the Way Book: The Globe By the Way Book is, to quote a contemporary source: "a broad smile, more or less, chiefly more, from cover to cover.  It ‘whips hypocrisy’ and skits at the follies and fancies and foibles of the day with a light, not to say lightning touch, which tickles a lot but never stings.  ‘Buy a bee and grow your own honey.  If one bee is not sufficient get two bees, and so on.’  ‘The best way of telling a toadstool from a mushroom is to make the servant eat it.  If she turns blue it is a toadstool.’  But to quote more would be giving the book away, whereas it should cost a shilling a copy.  Some paper people I know want the earth; others take the Globe; but week-enders cannot afford to be without the ‘By The Way Book’ if they mean to die happily.”  (Abridged, The World’s Paper Trade Review, London, July-September 1908)"

Macbeth (Strauss): Macbeth is a symphonic poem written by Richard Strauss between 1886 and 1888.  The work was his first tone poem, which Strauss described as "a completely new path" for him compositionally.  Written in some semblance of sonata form, the piece was revised more thoroughly than any of Strauss's other works; these revisions, focused primarily on the development and recapitulation sections, show how much the composer was struggling at this point in his career to balance narrative content with musical form.  Bryan Gilliam writes in "The New Grove Dictionary of Music and Musicians" that, "New path or not, "Macbeth" failed to find a firm place in the concert repertory, because it lacked the thematic cogency and convincing pacing of musical events so evident in the two antecedent works ["Don Juan" and "Tod und Verklärung" ("Death and Transfiguration")].  And despite revisions to the orchestration, in an attempt to restrain inner voices and highlight principal themes, "Macbeth" still falls short of "Don Juan" and "Tod und Verklärung" in sonic clarity."

Pit of Darkness: Pit of Darkness is a 1961 British thriller film, directed by Lance Comfort and starring William Franklyn and Moira Redmond.  The film is an amnesia thriller dealing with a man's attempts to piece together a sequence of strange events in which he seems to have been involved during the time of which he has no memory, based on the novel "To Dusty Death" by Hugh McCutcheon.

Supporting paragraphs: The Way to Dusty Death Tomorrow and tomorrow and tomorrow
Answer: Tomorrow and tomorrow and tomorrow