“Among the world's crops wheat is pre-eminent both in regard to its antiquity and its importance as a food of mankind. In prehistoric times it was cultivated throughout Europe, and was one of the most valuable cereals of ancient Persia, Greece, and Egypt.”
[The Wheat Plant: A Monograph, 1921, London, Duckworth & Co, 3, https://babel.hathitrust.org/cgi/pt?id=uc2.ark:/13960/t56d5r310&view=1up&seq=21]
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John Percival 1
British agricultural botanist 1863–1949Related quotes

Source: quoted in Londhe, S. (2008). A tribute to Hinduism: Thoughts and wisdom spanning continents and time about India and her culture https://books.google.com/books/about/A_Tribute_to_Hinduism.html?id=G3AMAQAAMAAJ

Pierre Sonnerat: Voyage aux Indes orientales et a la Chine, Paris, 1782. Quoted in A Look at India From the Views of Other Scholars, by Stephen Knapp https://www.stephen-knapp.com/a_look_at_india_from_the_views_of_other_scholars.htm
Source: quoted in Londhe, S. (2008). A tribute to Hinduism: Thoughts and wisdom spanning continents and time about India and her culture https://books.google.com/books/about/A_Tribute_to_Hinduism.html?id=G3AMAQAAMAAJ

Said to portrait painter Samuel Johnson Woolf, cited in Here am I (1941), Samuel Johnson Woolf; this has often been abbreviated: Most writers regard truth as their most valuable possession, and therefore are most economical in its use.
Context: A critic never made or killed a book or a play. The people themselves are the final judges. It is their opinion that counts. After all, the final test is truth. But the trouble is that most writers regard truth as their most valuable possession and therefore are most economical in its use.

“Children are the world's most valuable resource and its best hope for the future.”
Re: United States Committee for UNICEF (25 July 1963); Box 11, President's Outgoing Executive Correspondence Series, White House Central Chronological File, Presidential Papers, Papers of John F. Kennedy http://www.jfklibrary.org/Research/Research-Aids/Ready-Reference/JFK-Quotations.aspx
1963

1900s, Inaugural Address (1905)
Context: The conditions which have told for our marvelous material well-being, which have developed to a very high degree our energy, self-reliance, and individual initiative, have also brought the care and anxiety inseparable from the accumulation of great wealth in industrial centers. Upon the success of our experiment much depends, not only as regards our own welfare, but as regards the welfare of mankind. If we fail, the cause of free self-government throughout the world will rock to its foundations, and therefore our responsibility is heavy, to ourselves, to the world as it is to-day, and to the generations yet unborn.