… in a world of voluntary social cooperation through mutually beneficial exchanges, where one man’s gain is another man’s gain, it is obvious that great scope is provided for the development of social sympathy and human friendships. It is the peaceful, cooperative society that creates favorable conditions for feelings of friendship among men. … the social relations formed by the division of labor tend to be permanent as individuals specialize in different tasks and continue to produce in those fields.
Murray N. Rothbard
Man, Economy, and State with Power and Market, p. 101
https://youtu.be/Php4b9AepRA “The member of a contractual society is free because he serves others only in serving himself. What restrains him is only the inevitable natural phenomenon of scarcity.” Ludwig von Mises Human Action, p. 280; p. 283 ...“markets...