Ayn Rand:
“Rights” are a moral concept—the concept that provides a logical transition from the principles guiding an individual’s actions to the principles guiding his relationship with others—the concept that preserves and protects individual morality in a social context—the link between the moral code of a man and the legal code of a society, between ethics and politics. Individual rights are the means of subordinating society to moral law.
The source of man’s rights is not divine law or congressional law, but the law of identity. A is A—and Man is Man. Rights are conditions of existence required by man’s nature for his proper survival. If man is to live on earth, it is right for him to use his mind, it is right to act on his own free judgment, it is right to work for his values and to keep the product of his work.