“Avoid studies of which the result dies with the worker.”
The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.
Variant: Shun those studies in which the work that results dies with the worker.
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Leonardo Da Vinci 363
Italian Renaissance polymath 1452–1519Related quotes

On the Nature of Acquaintance: Neutral Monism (1914)
1910s
“The study resulted in a model of competence, not merely a laundry list of characteristics.”
Source: Competent manager (1982), p. 43.

Quoted in “Collected works of Periyar E.V.R.” p. 511.
Rationalism

1930s - 1950s, Statement from Modern Painting and Sculpture', (1933)
Source: en.wikiquote.org - Alexander Calder / Quotes of Alexander Calder / 1930s - 1950s / Statement from Modern Painting and Sculpture', (1933)

On the Hypotheses which lie at the Bases of Geometry (1873)

Source: Contributions to Modern Economics (1978), Chapter 7, Marx, Marshall and Keynes, p. 75