Johann Gottlieb Fichte,
The Science of Rights — Appendix 1 Fundamental Principles of the Rights of Family
(1889)
“ Marriage is, therefore, no invented custom, nor an arbitrary institution, but a relation necessarily and perfectly determined through nature and reason in their union. Perfectly determined, I say, that is, only a marriage such as we have described, and absolutely no other union of both sexes for the satisfaction of the sexual impulse is permitted by nature and reason. It is not the business of the Science of Rights, but of the far higher laws of nature and reason to establish and determine marriage. To look upon marriage as merely a legal relation leads to improper and immoral conceptions. ”
