This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
... issues have to be made subject to objectively defined laws and have to be resolved by an impartial arbiter, administering the laws, i.e., by a judge (and a jury, when appropriate).

> Observe the basic principle governing justice in all these cases: it is the principle that no man may obtain any values from others without the owners’ consent — and, as a corollary, that a man’s rights may not be left at the mercy of the unilateral decision, the arbitrary choice, the irrationality, the whim of another man.

Such, in essence, is the proper purpose ...
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