This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
...wledge to guide his actions — the basic condition he requires is the freedom to think and to act according to his rational judgment. This does not mean that a man must live alone and that a de sert island is the environment best suited to his needs. Men can derive enormous benefits from dealing with one another. A social environment is most conducive to their successful survival — b ut only on certain conditions.

“The two great values to be gained from social existence are: knowledge and trade. Man is the only species that can transmit and expand his store o...
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