28. Joseph Saurin (1659–1737), a French Cartesian mathematician and physicist, asserted in the first decade of the eighteenth century that the universal “attraction” of Newton, which could be only measured and not explained, was nothing more than a new version of the scholastic “occult qualities.” See Fontenelle’s “Éloge de M. de Saurin,” Oeuvres (Amsterdam, 1764), VI, 338; Voltaire’s Lettres philosophiques, in Oeuvres, XXII, 138; and d’Alembert’s article “Attraction,” Encyclopédie, I, 854.

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