“He who buys what he needs not, sells what he needs.”

— Mateo Alemán, book Guzmán de Alfarache

Pt. II, Lib. III, Ch. III.
Guzmán de Alfarache (1599-1604)

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Mateo Alemán15

novelist, writer 1547–1614

James Richardson (1950) American poet

#314
Vectors: Aphorisms and Ten Second Essays (2001)

“Why could the typical investor expect any better success in trying to buy at low levels and sell at high levels than in trying to forecast what the market is going to do? Because if he does the former he acts only after the market has moved down into buying levels or up into selling levels. His role is not that of a prophet but of a businessman seizing clearly evident investment opportunities. He is not trying to be smarter than his fellow investors but simply trying to be less irrational than the mass of speculators who insist on buying after the market advances and selling after it goes down. If the market persists in behaving foolishly, all he seems to need is ordinary common sense in order to exploit its foolishness.”

Benjamin Graham (1894–1976) American investor

Source: The Intelligent Investor: The Classic Text on Value Investing (1949), Chapter II, The Investor and Stock-Market Fluctuations, p. 31

“I’m a terrible salesman,” he finally said. “I always tell the truth about what I’m selling, and then nobody buys it.”

Orson Scott Card (1951) American science fiction novelist

Source: The Tales of Alvin Maker, The Crystal City (2003), Chapter 12 “Springfield” (p. 250).

“6129. Who buys,
Had need of an hundred Eyes;
But one's enough,
For him that sells the Stuff.”

Thomas Fuller (writer) (1654–1734) British physician, preacher, and intellectual

Introductio ad prudentiam: Part II (1727), Gnomologia (1732)

“He lies on a regular basis. He says what he feels that he needs to say for his own benefit, and then he does what he feels that he needs to do for his own benefit as well. And all too often it doesn’t go together.”

Merav Michaeli (1966) Israeli politician

About Benjamin Netanyahu, as quoted in Demonstrators flood the streets demanding equal rights for gays https://www.jpost.com/Israel-News/Politics-And-Diplomacy/Hundreds-demonstrate-for-LGBT-rights-in-Jerusalem-Tel-Aviv-and-Haifa-563115 (July 22, 2018) by Rocky Baier, The Jerusalem Post.