Also in Recipes from an Edwardian Country House: A Stately English Home Shares Its Classic Tastes by Laura Schaefer [Simon & Schuster, 2013, ISBN 1-476-73033-4] ( p. 22 https://books.google.com/books?id=zZPzAQAAQBAJ&pg=PA22)
Source: The Moonstone [Street, 1868] ( p. 49 https://books.google.com/books?id=FmsOAAAAQAAJ&pg=PA49).
“breakfast breakfast
i am full of breakfast
and they are at breakfast
in heaven
they breakfast in heaven
all s well with the world”
the robin and the worm
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Don Marquis 55
American writer 1878–1937Related quotes

“Culture eats strategy for breakfast.”
According to The Quote Investigator, this phrase first appeared on PIMA’s North American Papermaker: The Official Publication of the Paper Industry Management Association, in an article by Bill Moore and Jerry Rose. The year was 2000. Since then, the phrase has appeared many times. Peter Drucker died in 2005. The first time his name was associated to the citation was on 2011. Other occurrences and versions of the phrase can be found at https://quoteinvestigator.com/2017/05/23/culture-eats/
Misattributed

“Hope is a good breakfast, but it is a bad supper.”
No. 36
Apophthegms (1624)
Variant: Money is a great servant but a bad master.

To Make You Hapier, by Roberta Orminston http://www.irenedunnesite.com/press/photoplay-april-1944/ Photoplay (April 1944).

“I am that one person
Who eats his breakfast,
Gazing at morning nothing.”
Classical Japanese Database, Translation #174 http://carlsensei.com/classical/index.php/translation/view/174 (Translation: Reginald Horace Blyth)
Individual poems
Original: (ja) 朝顔に
我は飯食ふ
男かな
Original: (ja) asagao ni
ware wa meshi kû
otoko kana

“2541. Hope is a good Breakfast, but a bad Supper.”
Introductio ad prudentiam: Part II (1727), Gnomologia (1732)