“If you really want to know what middle earth is based on, it’s my wonder and delight in the earth as is, particularity the natural earth.”
-J.R.R Tolkien

I am 99.9% sure I read it in his letters. Does anyone know which one?

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“I am in fact a Hobbit (in all but size). I like gardens, trees and unmechanized farmlands; I smoke a pipe, and like good plain food (unrefrigerated), but detest French cooking; I like, and even dare to wear in these dull days, ornamental waistcoats. I am fond of mushrooms (out of a field); have a very simple sense of humour (which even my appreciative critics find tiresome); I go to bed late and get up late.”
-J.R.R Tolkien

I don't believe that there is any such quote in the Letters of J.R.R. Tolkien. And Tolkien would certainly have written "Middle-earth" not "middle earth".

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In gratitude forever … .

Yes, that was my own copy mistake I had taken down long ago. I might have copied it from Carpenters' bio. But perhaps not.

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“I am in fact a Hobbit (in all but size). I like gardens, trees and unmechanized farmlands; I smoke a pipe, and like good plain food (unrefrigerated), but detest French cooking; I like, and even dare to wear in these dull days, ornamental waistcoats. I am fond of mushrooms (out of a field); have a very simple sense of humour (which even my appreciative critics find tiresome); I go to bed late and get up late.”
-J.R.R Tolkien

In any event, I don't believe that there is any such quote in Letters. The closest I can think of (which is not actually from a letter but from notes that Tolkien wrote for himself on Auden's review of The Return of the King included in the book as "Letter" 183) is the following:



But that is not all that similar to your quote.

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In gratitude forever … .

No it is not. Thanks for having a look. I might have to try digging in again.

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“I am in fact a Hobbit (in all but size). I like gardens, trees and unmechanized farmlands; I smoke a pipe, and like good plain food (unrefrigerated), but detest French cooking; I like, and even dare to wear in these dull days, ornamental waistcoats. I am fond of mushrooms (out of a field); have a very simple sense of humour (which even my appreciative critics find tiresome); I go to bed late and get up late.”
-J.R.R Tolkien

It's definitely not in Letters (not even in the extended version of Letter 131 to Milton Waldman that was only recently published in Hammond and Scull's "LOTR Reader's Companion".)

As someone has already replied to you in another forum, it first seems to have surfaced in a NY Times obituary (linked below). However looking at the other "quotes" supposedly attributed to Tolkien in that obituary I would not trust it (the obituary) as far as I could throw it. (Read the bit about Hans Christian Anderson which casts what Tolkien actually said into modern, hip wording. This was 1973, remember, surprising they didn't go as far as having JRRT saying "I knew he was always getting at me, man").

Maybe it was something said in an interview - certainly the language is more informal than anything Tolkien would have written, even in a letter.

And yet, even though the quote sounds rather like a cobbled-together pastiche of what someone might have thought Tolkien might have said, there is just enough in there to be credible. The "wonder and delight" phrase is genuine Tolkien. JRRT uses it when describing the framework of the "Tale of Arda" (the overall big picture Legendarium we might say.) (Described in Morgoth's Ring, The Later Quenta Silmarillion).

And this information would not have been available to the obituary author at the time of writing. To be fair, Tolkien does use "wonder and delight" in LOTR in other contexts a couple of times, so it could have been borrowed from there, if it was borrowed at all.

https://movies2.nytimes.com/books/01/02/11/specials/tolkien-obit.html

It appears, based on a review in the Washington Post, that John Garth cites this quote in his recent book, The Worlds of J.R.R. Tolkien. I don't have that book, but Garth is always very good with his sourcing and may provide more information.

Ding! Ding! Ding! We have a winner!

John cites the quote on page 12. It is from the interview that Henry Resnick did with Tolkien on March 21966, though it was printed in Niekas 18 in Spring of 1967, and can be read here.

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In gratitude forever … .

Thanks for all the help guys.

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“I am in fact a Hobbit (in all but size). I like gardens, trees and unmechanized farmlands; I smoke a pipe, and like good plain food (unrefrigerated), but detest French cooking; I like, and even dare to wear in these dull days, ornamental waistcoats. I am fond of mushrooms (out of a field); have a very simple sense of humour (which even my appreciative critics find tiresome); I go to bed late and get up late.”
-J.R.R Tolkien

Thanks for digging up that delightful interview, so we can hear the Professor in his own voice, so to speak. He sounded a little irked about the whole thing.

"T. I don't mind it, as long as it doesn't become obsessive. It doesn't obsess me."

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In the midst of winter, I found there was, within me, an invincible summer. ~ Albert Camus