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Quotation from Dialogues Concerning Two New Sciences (Second to Fourth Days) by Galileo Galilei

“men have discovered, therefore, that in order to make lances strong as well as light they must make them hollow”

Galileo Galilei (spoken by Salviati)

Dialogues Concerning Two New Sciences (Second to Fourth Days), Second Day, closing discussion of hollow solids, trans. Henry Crew and Alfonso de Salvio (1914)

Salviati links practical craft with nature, which uses hollow forms in the bones of birds and in reeds and straw to gain strength without weight.

Citation: "men have discovered, therefore, that in order to make lances strong as well as light they must make them hollow" — Galileo Galilei, Dialogues Concerning Two New Sciences (Second to Fourth Days), Second Day, closing discussion of hollow solids, trans. Henry Crew and Alfonso de Salvio (1914). (id galileo-two-new-sciences-q4)

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