This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...n regard to concretes or particulars, implementing a mutually accepted basic principle, that one may compromise. For instance, one may bargain with a buyer over the price one wants to receive fo r one’s product, and agree on a sum somewhere between one’s demand and his offer. The mutually accepted basic principle, in such case, is the principle of trade, namely: that the buyer must pay the seller for his product. But if one wanted to be paid and the alleged buyer wanted to obtain one’s product for nothing, no compromise, agreement or discussion would be possible, only th...
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