“There is nothing necessary or desirable for human nutrition to be found in meats or flesh foods, which are not found in and derived from vegetable products.”
Source: The New Dietetics, What to Eat and How: A Guide to Scientific Feeding in Health and Disease, Battle Creek, MI: The Modern Medicine Publishing Co., 1921, p. 366 https://books.google.it/books?id=TNsMAwAAQBAJ&pg=PA366.
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John Harvey Kellogg 14
American physician 1852–1943Related quotes

Source: Mazdaznan Dietetics and Cookery Book (1913), p. 199
Essays on Diet (1883); quoted in Prof. Francis William Newman http://www.ivu.org/history/europe19b/newman.html at the International Vegetarian Union website.

"Bring Me The Horizon’s Vegan Warrior" https://www.peta2.com/news/jona-weinhofen-vegan-peta2-ad/, interview with PETA (11 November 2011).

Source: De architectura (The Ten Books On Architecture) (~ 15BC), Book VIII, Chapter VI, Sec. 10