The legacy of the following people will live on forever and so will their last words.
(No, I did not research these, I found them on various places on the internet)

1. Ernest Hemingway: “Goodnight my kitten.” Spoken to his wife before he killed himself.
2. Jane Austen: “I want nothing but death.” In response to her sister, Cassandra, who was asking her if she wanted anything.
3. J.M Barrie: “I can’t sleep.”
4. L. Frank Baum: “Now I can cross the shifting sands.”
5. Edgar Allan Poe: “Lord help my poor soul.”
6. Thomas Hobbes: “I am about to take my last voyage, a great leap into the dark,”
7. Alfred Jarry: “I am dying…please, bring me a toothpick.”
8. Hunter S. Thompson: “Relax — this won’t hurt.”
9. Henrik Ibsen: “On the contrary!”
10. Anton Chekhov: “I haven’t had champagne for a long time.”
11. Mark Twain: “Good bye. If we meet—” Addressed to his daughter Clara, Mark Twain’s final words were more about extending love than preserving his reputation for cleverness.
12. Louisa May Alcott: “Is it not meningitis?” Alcott did not have meningitis, though she believed it to be so. She died from mercury poison.
13. Jean Cocteau: “Since the day of my birth, my death began its walk. It is walking towards me, without hurrying.”
14. Washington Irving: “I have to set my pillows one more night, when will this end already?”
15. Leo Tolstoy: “But the peasants…how do the peasants die?”
16. Hans Christian Andersen: “Don’t ask me how I am! I understand nothing more.”
17. Charles Dickens: “On the ground!” He suffered a stroke outside his home and was asking to be laid on the ground.
18. H.G. Wells: “Go away! I’m all right.” He didn’t know he was dying.
19. Johann Wolfgang von Goethe: “More light.”
20. W.C. Fields: “Goddamn the whole fucking world and everyone in it except you, Carlotta!” “Carlotta” was Carlotta Monti, actress and his mistress.
21. Voltaire: “Now, now, my good man, this is no time for making enemies.” When asked by a priest to renounce Satan.
22. Dylan Thomas: “I’ve had 18 straight whiskies…I think that’s the record.”
23. George Bernard Shaw: “Dying is easy, comedy is hard.”
24. Henry David Thoreau: “Moose…Indian.”
25. James Joyce: “Does nobody understand?” These last words are fitting for a true mischief-man of literature. Writer of Finnegans Wake, Joyce was an experimenter who worked and tested the very limits of language. His final lines also express the thoughts of many English teachers who have ever taught one of his books.
26. Oscar Wilde: “My wallpaper and I are fighting a duel to the death. One or the other of us has to go.” Though these words, spoken by Oscar Wilde on his deathbed in Room 16 of the Hôtel d’Alscade in Paris, are famously attributed as the poet’s last words, the truth is that Wilde didn’t actually die until weeks later. Still, literary lore has generally adopted these words as Wilde’s last, a fitting farewell from a writer known for his wit and flair.
27. Bob Hope: “Surprise me.” He was responding to his wife asking where he wanted to be buried.
28. Roald Dahl’s last words are commonly believed to be “you know, I’m not frightened. It’s just that I will miss you all so much!” which are the perfect last words. But, after he appeared to fall unconscious, a nurse injected him with morphine to ease his passing. His actual last words were a whispered “ow, fuck”
29. Salvador Dali hoped his last words would be “I do not believe in my death,” but instead, they were actually, “Where is my clock?”
30. Emily Dickinson: “I must go in, the fog is rising.”
31. Virginia Woolf: “I don’t think two people could have been happier than we have been. V.” These are the last sentences of Woolf’s suicide note. She was addressing her husband, Leonard.
32. Winston Churchill: “I’m bored with it all.” In true Churchillian fashion the former Prime Minister let death know it had his permission to take him.
33. Victor Hugo: “This is the fight of day and night. I see black light.” The Notre Dame de Paris author’s poetic last words echo Goethe’s “Oh light!”
34. Karl Marx: “Go on, get out. Last words are for fools who haven’t said enough.” Marx said this to his housekeeper who wondered with what style the thinker was going to depart this world.
35. Robert Louis Stevenson: “What’s that? Does my face look strange?” There are minor variations of Stevenson’s final words (e.g. “Do I look strange?”). Either way, the Jekyll and Hyde author’s last words were a response to the brain hemmorage that in only moments was to incapacitate and kill him.
36. Ian Fleming: “I am sorry to trouble you chaps. I don’t know how you get along so fast with the traffic on the road these days.” When Fleming’s body finally had its fill of scotch and cigars, the James Bond author apologized to the medics in his ambulance for the inconvenience he caused.
37. Herman Melville: “God Bless Captain Vere!” The great American novelist spent his last moment partially living in his fiction. Captain Vere is a character in Billy Budd, which Melville worked on until his death.
38. Lewis Carroll: “Take away these pillows, I won’t need them any longer.” Carroll evidently knew his time was coming to an end, and left the world with both a trivial and dramatic declaration.
39. Benjamin Franklin: “Dying men can do nothing easy.” The American Renaissance man said this to his daughter, who prompted him to lay differently so he could breathe less laboriously.
40. Frank Sinatra: “I’m losing it.”
41. Vladimir Nabokov: “A certain butterfly is already on the wing.” He was an entomologist, particularly interested in butterflies.
42. Arthur Conan Doyle: “You are wonderful.” He said to his wife while in the garden and then clutched his chest and died.
43. Steve Jobs: “Oh wow. Oh wow. Oh wow.” According to his sister Mona.
44. Nostradamus: “Tomorrow, at sunrise, I shall no longer be here.” He was right. His final prediction.