This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...e benefits of the previously known. New discoveries are a potential value to all men, but not at the price of sacrificing all of their actual values. A “progress” extended into infinity, whi
ch brings no benefit to anyone, is a monstrous absurdity. And so is the “conquest of space” by some men, when and if it is accomplished by expropriating the labor of other men who are left w
ithout means to acquire a pair of shoes.
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Progress can come only out of men’s surplus, that is: from the work of those men whose ability produces more than their personal consumpt...