Second among the crimina carnis contra naturam is intercourse sexus homogenii/ where the object of sexual inclination continues, indeed, to be human,… - Immanuel Kant

Our understanding is a faculty of concepts, i.e., a discursive understanding, for which it must of course be contingent what and how different might be the particular that can be given to it in nature and brought under its concepts.

Une politique valable ne peut faire un pas sans rendre hommage à la morale.

All true metaphysics is taken from the essential nature of the thinking faculty itself, and therefore in nowise invented, since it is not borrowed from experience, but contains the pure operations of thought, that is, conceptions and principles à priori, which the manifold of empirical presentations first of all brings into legitimate connection, by which it can become empirical knowledge, i.e. experience. ...mathematical physicists were thus quite unable to dispense with such metaphysical principles...