Author Madeleine L'Engle, whose novel "A Wrinkle in Time" has captivated generations of schoolchildren and adults since the 1960s, has died, her publicist said Friday. She was 88. L'Engle died Thursday at a nursing home in Litchfield. The Newbery Medal winner wrote more than 60 books.

Although L'Engle was often labeled a children's author, she disliked that classification. In a 1993 Associated Press interview, she said she did not write down to children.

"In my dreams, I never have an age," she said. "I never write for any age group in mind. ... When you underestimate your audience, you're cutting yourself off from your best work."

"A Wrinkle in Time" — which L'Engle said was rejected repeatedly before it found a publisher in 1962 — won the American Library Association's 1963 Newbery Medal for best American children's book. Her "A Ring of Endless Light" was a Newbery Honor Book, or medal runner-up, in 1981.

"Wrinkle" tells the story of adolescent Meg Murry, her genius little brother Charles Wallace, and their battle against evil as they search across the universe for their missing father, a scientist.

The brother and sister, helped by a young neighbor, Calvin, and some supernatural spirits, must pass through a time travel corridor (the "wrinkle in time") and overcome the ruling powers on a planet with a totalitarian government reminiscent of George Orwell's "1984."

"A Wrinkle in Time" exposes readers to the words of great thinkers, as its characters quote Shakespeare, the Bible, Euripides, Dante and others.

After Harry Potter mania swept the world of children's literature, "A Wrinkle in Time" was often cited as a precursor or, for frantic Potter fans, something to read while waiting for their hero's next installment.

L'Engle told Newsweek in 2006 that she had read one Potter book and, "It's a nice story but there's nothing underneath it. I don't want to be bothered with stuff where there's nothing underneath."

I remember reading about tesseracts in her book, it really gelled the idea of the space/time dimensions in my then young mind. It's a great book. Might just get it and read it again. If you haven't, I recommend. RIP.