“Though I may not, like them, be able to quote other authors, I shall rely on that which is much greater and more worthy — on experience, the mistress of their Masters.”
The Notebooks of Leonardo da Vinci (1883), I Prolegomena and General Introduction to the Book on Painting
Context: Though I may not, like them, be able to quote other authors, I shall rely on that which is much greater and more worthy — on experience, the mistress of their Masters. They go about puffed up and pompous, dressed and decorated with [the fruits], not of their own labours, but of those of others. And they will not allow me my own. They will scorn me as an inventor; but how much more might they — who are not inventors but vaunters and declaimers of the works of others — be blamed.
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Leonardo Da Vinci 363
Italian Renaissance polymath 1452–1519Related quotes

<p>Comme homme, j'ai le cœur 3 ou 4 fois moins sensible, parce que j'ai 3 ou 4 fois plus de raison et d'expérience du monde, ce que vous autres femmes appelez dureté de cœur.</p><p>Comme homme, j'ai la ressource d'avoir des maîtresses. Plus j'en ai et plus le scandale est grand, plus j'acquiers de réputation et de brillant dans le monde.</p>
Letter to his sister Pauline http://fr.wikisource.org/wiki/Stendhal_-_Correspondance_-_Tome_I (29 August 1804)

Source: L’Expérience Intérieure (1943), p. 7
“Such mistress, such Nan,
Such master, such man.”
"April's Abstract". Comment: M. Cimber of the Bibliothèque Royale ascribes this proverb to Chevalier Bayard: “Tel maître, tel valet.”
A Hundred Points of Good Husbandry (1557)

Preface
A Course of Lectures on Natural Philosophy and the Mechanical Arts (1807)

Source: Dorothy Parker: Complete Broadway, 1918–1923 (2014) https://openlibrary.org/books/OL25758762M/Dorothy_Parker_Complete_Broadway_1918-1923, Chapter 2: 1919, p. 64

The Ethics of Belief (1877), The Weight Of Authority