Goethe: West–Eastern Diwan (age 70), Wilhelm Meister's Journeyman Years (age 72) Marienbad Elegy (age 73).
Thomas Mann: Doctor Faustus (age 72)
I have randomly picked a few people from the list of Nobel Prize Laureates in Literature[1] who have made it to old age, and most of them seem to have been quite productive even then.
Aeschylus wrote The Oresteia when he was 65. I believe Sophocles wrote Oedipus the King at age 68, and continued writing through Electra (probably) and Philoctetes (which took first prize in Athens) in his mid- to late-80s.
Goethe: West–Eastern Diwan (age 70), Wilhelm Meister's Journeyman Years (age 72) Marienbad Elegy (age 73).
Thomas Mann: Doctor Faustus (age 72)
I have randomly picked a few people from the list of Nobel Prize Laureates in Literature[1] who have made it to old age, and most of them seem to have been quite productive even then.
[1] https://en.wikipedia.org/wiki/List_of_Nobel_laureates_in_Lit...