This is a quote from the book "The ​Virtue Of Selfishness" by Ayn Rand
... capitalism nor to dogs — is applicable to the social theory of ethics. The existential monuments to this theory are Nazi Germany and Soviet Russia.

The subjectivist theory of et
hics is, strictly speaking, not a theory, but a negation of ethics. And more: it is a negation of reality, a negation not merely of man’s existence, but of all existence. Only the concept of a fluid, plastic, indeterminate, Heraclitean universe could permit anyone to think or to preach that man needs no objective principles of action — that reality gives him a blank check on values...
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