Three Steps to Yes: The Gentle Art of Getting Your Way
—H. L. Mencken O
“When the thing taken into union is perfectly adapted to that which receives it, the result is delight and pleasure and satisfaction.”
The Notebooks of Leonardo da Vinci (1883), XIX Philosophical Maxims. Morals. Polemics and Speculations.
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Leonardo Da Vinci 363
Italian Renaissance polymath 1452–1519Related quotes

Valerius Terminus: Of the Interpretation of Nature (ca. 1603) Works, Vol. 1, p. 83; The Works of Francis Bacon (1819) p. 133, https://books.google.com/books?id=xgE9AAAAYAAJ&pg=PA133 Vol. 2

Letter to Peter Collinson (29 December 1754); published in The Writings of Benjamin Franklin (1905), edited by Albert Henry Smyth, Vol. III, p. 242; also misquoted using "Noodles" for "Noddles".
Epistles

“Tragedy delights by affording a shadow of the pleasure which exists in pain.”
A Defence of Poetry http://www.bartleby.com/27/23.html (1821)

“Of pleasures, those which occur most rarely give the most delight.”
Fragment xi.
Golden Sayings of Epictetus, Fragments

Introduction to the Book of Zohar, in Introduction to the Book of Zohar: Volume Two, Michael Laitman, ed., Laitman Kabbalah Publishers, 2005, p. 119.
Introduction to the Book of Zohar

“Pleasure has desire in it. Desire is pain. There is no satisfaction. So pleasure is pain.”
Source: The Yellow Book, 1974, p.65