This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
... earnings? The free market, that is: the voluntary choice and judgment of the men who are willing to trade him their effort in return.

When a man trades with others, he is counting
— explicitly or implicitly — on their rationality, that is: on their ability to recognize the objective value of his work. (A trade based on any other premise is a con game or a fraud.) Thu s, when a rational man pursues a goal in a free society, he does not place himself at the mercy of whims, the favors or the prejudices of others; he depends on nothing but his own effort: direct...
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