[[caption-width-right:220:A book, too, can be a star, a living fire to lighten the darkness, leading out into the expanding universe.]]

Madeleine L'Engle (1918 2007) was an American writer of YoungAdultLiterature best-known for ''Literature/AWrinkleInTime'' and its sequels.

Most of her novels belong to one of two sequences, referred to as "Kairos" and "Chronos", from the two ancient Greek words for time. "Chronos" refers to chronological or sequential time, while "Kairos" signifies a time in between, a moment of indeterminate time in which something special happens. (Although both sequences contain speculative elements, the Chronos sequence is primarily realistic, while the Kairos sequence, which includes ''A Wrinkle in Time'', is clearly sf/fantasy.)

* Time Quartet (concerning the Murry family)
## ''Literature/AWrinkleInTime'' (1962)
## ''Literature/AWindInTheDoor'' (1973)
## ''Literature/ASwiftlyTiltingPlanet'' (1978)
## ''Literature/ManyWaters'' (1986)
* O'Keefe novels (concerning the children of Meg Murry)
## ''The Arm of the Starfish'' (1965)
## ''Dragons in the Waters'' (1976)
## ''A House Like a Lotus'' (1984)
## ''Literature/AnAcceptableTime'' (1989)

* Austin family novels
## ''Meet the Austins'' (1960)
## ''The Moon by Night'' (1963)
## ''The Young Unicorns'' (1968)
## ''A Ring of Endless Light'' (1980)
## ''The Anti-Muffins'' (1980)
## ''The Twenty-four Days Before Christmas'' (1984)
## ''Troubling a Star'' (1994)
## ''A Full House: An Austin Family Christmas'' (1999)

!!Additional tropes:

* AllGirlsWantBadBoys: And no boy is a clearer example than Zachary Grey.
* BuyThemOff
* CharacterOverlap: The Kairos and Chronos sequences are connected by several supporting characters who appear in both, as well as in some of L'Engle's other works.
* DeadpanSnarker: She was once asked in an interview if the 2004 version of ''Wrinkle'' lived up to her expectations.
--> ''Yes. I expected it to be bad, and it was.''
* DreamingTheTruth
* DudeMagnet: In her young adult novels, both Vicky and Polly qualify.
* MamasBabyPapasMaybe: In ''The Love Letters''
* TakingTheVeil: In ''A Severed Wasp'', a minor character has this as her backstory -- after her divorce.