This is a quote from the book "The Virtue Of Selfishness" by Ayn Rand
...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
ion requires, those who are intellectually and financially able to venture out in pursuit of the new. Capitalism is the only system where such men are free to function and where progress is acco...