“Aristotle him selfe sayeth, that medicines be no meate to lyue withall.”
Toxophilus (1545), p. 50
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Roger Ascham 2
English scholar and didactic writer 1515–1568Related quotes

Fry on the reason for the popularity of alternative medicine. "Last Chance to Think" Interview (2010) by Kylie Sturgess in Skeptical Inquirer. Vol 34 (1)
2000s
Keli Yekar, quoted in Abraham Chill, The Mitzvot: The Commandments and Their Rationale (New York: Bloch, 1974), p. 400; as quoted in Richard H. Schwartz, Judaism and Vegetarianism (New York: Lantern Books, 2001), p. 11 https://books.google.it/books?id=zo5TqKQVcEgC&pg=PA11.

Notes from Devotional Authors of the Middle Ages (1873-1874)
Context: That Religion is not devotion, but work and suffering for the love of God; this is the true doctrine of Mystics — as is more particularly set forth in a definition of the 16th century: "True religion is to have no other will but God's." Compare this with the definition of Religion in Johnson's Dictionary: "Virtue founded upon reverence of God and expectation of future rewards and punishments"; in other words on respect and self-interest, not love. Imagine the religion which inspired the life of Christ "founded" on the motives given by Dr. Johnson!
Christ Himself was the first true Mystic. "My meat is to do the will of Him that sent me and to finish His work." What is this but putting in fervent and the most striking words the foundation of all real Mystical Religion? — which is that for all our actions, all our words, all our thoughts, the food upon which they are to live and have their being is to be the indwelling presence of God, the union with God; that is, with the Spirit of Goodness and Wisdom.

“Laughter is the best medicine, y'know, besides medicine.”
Words, Words, Words (2010)

“Let food be thy medicine and medicine be thy food.”
This is often attributed to Hippocrates but does not appear in the Hippocratic corpus. See Diana Cardenas https://www.researchgate.net/publication/258099432_Let_not_thy_food_be_confused_with_thy_medicine_The_Hippocratic_misquotation, "Let not thy food be confused with thy medicine: The Hippocratic misquotation", e-SPEN: The European e-Journal of Clinical Nutrition and Metabolism XXX:6 (October 2013).
Disputed

Mahayana, Laṅkāvatāra Sūtra, Chapter Eight. On Meat-eating