Man can gain immense values (such as knowledge and trade) by living with other men in society, if that society is a proper society. A proper society is one where each and every man holds as an absolute the fact that every man is an end to himself, and that other men are not his pawns, nor is he theirs, or in the famous words of the hero of Atlas Shrugged, John Galt,
“I swear by my life and by my love of it — that I will never live for the sake of another man, nor ask another man to live for mine.”
Such is the credo of the individualist — the independent mind — that recognizes no authority higher than its own judgment of the truth. Since capitalism is based upon the only system that leaves each and every man free to act independently — by his own mind — it is the only moral system.