Stock market profits are pain money. First comes the pain, then the money.
Borsengewinne sind Schmerzengeld. Erst kommen die Schmerzen, dann das Geld.

Investors
André Kostolany
Born in Budapest in 1906, Kostolany spent 80-plus years in markets from Paris and Frankfurt. His Egg Theory and contrarian philosophy made him Europe's foremost speculator-educator. He died in 1999 at 93.
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André Kostolany's Other Quotes
I cannot tell you how to get rich quickly, but I can tell you how to get poor quickly: by trying to get rich quickly.
On the stock exchange, anything is possible, including the opposite.
The rich can speculate; the poor must not; the penniless have no choice but to speculate.
Buy stocks, take sleeping pills, and stop looking at the papers. After many years you will see: you are rich.
Related Quotes
I think the key to investing is having a strong stomach and being patient.
-- Bill Ackman
Bodily pain does not last without limit; intense pain is brief in duration.
-- Epicurus
Patience is bitter, but its fruit is sweet.
-- Hideyo Noguchi
The experiments proceed slowly. At first a certain amount of patience was needed, but I soon found that matters went better when I carried on several experiments simultaneously.
-- Gregor Mendel
Let me tell you the secret that has led me to my goal. My strength lies solely in my tenacity.
-- Louis Pasteur
The cowards never started and the weak died along the way. That leaves us.
-- Phil Knight