"If freedom, according to traditional morality itself, is a fundamental ethical value, the very basis of ethics, one must be aware that the creation of a child may be the first huge disrespect of the freedom of the human person. The issue of freedom suffers here from the same problem as the issue of pain: it is a matter of ethical value that the traditional affirmative ethics is unable to radicalize."
January 1, 1970
https://en.wikiquote.org/wiki/Antinatalism