from The American Heritage® Dictionary of the English Language, 4th Edition

  • Alembert, Jean Le Rond d' 1717-1783. French mathematician and philosopher who wrote the influential Treatise of Dynamics (1743). He also contributed to Diderot's Encyclopédie.


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  • The first cause to galvanize this new program was Diderot and d'Alembert's Encyclopédie.


  • Some readers singled out this part of the book as the major source of its controversy, and in a similar vein the very materialist account of “Âme,” or the soul, which appeared in volume 1 of Diderot and d'Alembert's


  • We may partly understand the distance at which Berlin was then behind Paris, when we read d'Alembert's just remonstrances with Frederick against giving as subjects for prize-essays such metaphysical problems as


  • From the 1740s on this led to alternative approaches to formulating a general mechanics, employing such different principles as the conservation of vis viva, the principle of least action, and d'Alembert's principle.

    Isaac Newton

  • The Living Forces appeared too late to make any difference, and Kant was unaware of d'Alembert's and Euler's research.

    Kant's Philosophical Development

  • "Baconisme," speaks of him (in d'Alembert's preliminary discourse) as "le plus grand, le plus universel, et le plus éloquent des philosophes."

    Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"

  • Diderot's _Prospectus (Oeuvres_, iii.) and d'Alembert's _Discours

    Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"

  • In 1749 d'Alembert deduced from the hypothesis of gravitation the explanation of the precession of the equinoxes and of the nutation of the earth's axis; and soon afterwards Euler, drawing upon the admirable resources of his mathematical genius, made still further improvements on d'Alembert's discovery.

    The Catholic Encyclopedia, Volume 12: Philip II-Reuss

  • Nothing is truer than d'Alembert's statement, in the "Discours préliminaire", that "our century believes itself destined to change all kinds of laws".

    The Catholic Encyclopedia, Volume 5: Diocese-Fathers of Mercy

  • This is somewhat less noticeable in the work of Madame de Tencin than elsewhere, because d'Alembert's mother was so very much cleverer a person than the generality of the novel-writers of her day that she could hardly fail to hide defects more cunningly.

    A History of the French Novel, Vol. 1 From the Beginning to 1800


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